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We don't recommend increasing the span at all without increasing the hinge to the same size. Not only is the Tab unsupported, but a lot of water pressure escapes where there is no hinge. This greatly reduces the effectiveness of the increase in size and can cause lots of spray too. And yes...

Are you sure they are 8" x 9"? That is really not a size we make, unless it was custom for a boat builder. 12" x 9" would be appropriate for that size boat or our M80 8" x 10" system. Here is a link to our sizing guidelines http://www.bennetttrimtabs.com/tab-sizing-guidelines/ Tom McGow...

Jim, If you send your name and address to me at Tabmanhelp@gmail.com we will be delighted to mail you a new Bennett type plug for the wiring harness, no charge. Tom Bennett Marine

Sounds like M.J. Thomas answered your E-mail. He is a great guy and is on top of our E-mails! Tom Bennett Marine

I am here too. How old is the system? We use the same Hydraulic Power Unit for all our "standard" systems. It could be low voltage from weak or dirty electrical connections, the first thing to do is check and clean all of them, particularly both ends of the black ground wire at the pump...

Rusty, Calibration is not necessary for the Tabs to operate. So I think the connections needed cleaning and that is why it is working now. Glad to hear all is good! Tom Bennett Marine

Don't do this!!!! The display is fastened from below and you will damage it! Tom Bennett Marine

Rusty, The keypad for the EIC must removed from the inside. But that may not be where the problem is. How old is the system? Here is a link to the instructions for the EIC http://www.bennetttrimtabs.com/wp-content/uploads/2015/05/EIC5000_instructions_May2014.pdf Go to page 6 and do the...

That is about the correct size. Do you feel that they trimmed the boat through a good range of speed, sea conditions and weight distribution? If so there is no reason to go larger. If not you could go with a 24 x 12, but you will have to relocate the actuator (ram) on the transom so that it...

The valve seats are in the pump which is located inside the boat and can changed with the boat in the water. So send me your name and address and I will be delighted send them to you. Tabmanhelp@gmail.com Tom Bennett Marine

The valve seats are either fouled or damaged allowing the fluid to bypass back into the reservoir. If it is a Bennett system send me your name and address Tabmanhelp@gmail.com and I will be delighted to send you new ones and instructions how to change them, no charge. Tom McGow Bennett Marine

Hi guys, I need your help. There is an owner of a 306 BIMINI over at The Hull Truth forum who says he gets spray from his Trim Tabs when they are in the retracted position. Here is a link, http://www.thehulltruth.com/boating-forum/573453-spray-retracted-trim-tabs.html Have any of you heard...

Derx2, Looking good! Tom Bennett Marine

Actually I am here! Grady designed those Trim Tabs and we manufactured them to their specifications. The key is to have the operators not adjust the forks side to side when the weight of the boat is being supported. You can't flip them over and I don't think they would fit under the boat with...

Here is a link to a video that covers the basic system and general troubleshooting http://www.bennetttrimtabs.com/videoplayer.php?vID=10 Here is a link to a video that covers troubleshooting the pump if it runs and a Trim Tab does not move http://www.bennetttrimtabs.com/videoplayer.php?vID=22...

The M120swill let you get up on plane faster with much less bow rise and stay on plane at much lower speeds. The ability to keep the bow down, cutting the waves at lower speeds will make running in a chop much more comfortable. Tom Bennett Marine

http://www.greatgrady.com/forum/viewtopic.php?f=3&t=21136 I posted on your other thread. Tom McGow Bennett Marine

Bigfoot, Bennett makes systems with shorter actuators (rams) such as the 10" X 12" m120, which is the size I would recommend for your boat. Even if these are a little too tall, it is usually easy to modify the platform a bit: Tom McGow Bennett Marine

CatMar II Let me know if you have any questions about installing Trim Tabs on your Tarpon and I will be delighted to help. Tom McGow Bennett Marine

Joesmo86. Size wise I would suggest either the Bennett 10" x 12" M120 or the 12 x 12 from Lenco. I had a set of M120s on my 20 ft Aquasport walkaround and they were a perfect size. The M120s have short actuators (rams) so they will fit nicely under a swim platform if you have one. If you opt...