New to me, 2003 GW Gulfstream 232. Previous owner is a good guy, had it for 10 years, but got tired and didn't use it much the last few. With 1050 hrs on the Yamaha F200's, I had them serviced, and found that there was little corrosion in the exhaust systems (the big worry), but the port motor needed a new trim/tilt hydraulic pump motor. $3K later, she's in the water, runs great, and I have an endless string of little projects I want/need to do. Have fished her the last two days around Santa Cruz and she handles great on the water, except: I can't seem to keep the motors trimmed out on plane below 25 knots. I really want to keep them at 3700, and about 18 knots but it either breaks free and they rev up to 4200 and 25+, or it falls off of plane and labors at 3200. At that point, I'm pushing the throttles to get it back up on plane again. In fairness, we're not talking smooth water here, we've had a close set 4' swell, and about 1' of chop. It's just odd to me that I can't keep the speed down and keep it on plane. I tried trimming it bow down, and that caused it to leap forward more, so now I'm trying bow up. I'm averaging about 1.5mpg on plane (with full tanks and 4 guys), but I'm sure it will get better fuel economy if I can run it faster. Suggestions? Nevertheless, as an ex-Cabo owner, I'm happy to be in the Grady family!