Throttle problem

[awalker]

I have a 1998 Gulfstream 232 with a Yamaha 2 stroke 250, great boat, I love it. My problem is that when I set power where I want it, (rpm and/or speed), I find the power begins to creep up and I have to pull back on the throttle. Conversly, when I'm powering back, I have to nudge it back up to my desired rpm/speed. It usually takes about five to eight seconds after I remove my hand for this "self adjust" to occur.
Is this just slop in the cable? Can it be adjusted? Appreciate any input.
Walker

 

[seasick]

My guess is that there is play in the cable. Check both ends to see if the outter sheath is secured tightly. Another possibility is that there is a break in the sheath somewhere and the cable is stretching when you move the throttle.
This is a new one to me so my guess is just that, a guess