I thought I'd start here first....2005 RLXI with the Monsoon and PP 6.5 is having a strange issue at times. Basically it won't get to the set speed once in a while, though it holds the slow speed. It only happened for 3 or 4 passes out of 20+ passes last night, so obviously it's an intermittent problem. It also happened once last week. Pulling my friend at 30 it would get to about 28ish and hold there, and no amount of additional throttle would speed it up. Pulling me at 34, it once locked in at 29ish. Pulling another friend at 36 it once locked in at 30ish. My recollection was I heard the beep when it was locked in at slow times, while my friend thinks it didn't. But applying more throttle in both cases didn't help. There doesn't seem to be any kinks or obstructions with the throttle cable, and the servo cable tightens up nicely when starting up...not sure on the servo cable when the problem is actually happening.
Any other ideas to check you guys can come up with? One other thing, when set and holding correctly at any given speed if one applies more throttle it speeds up several mph before slowly and eventually returning to set speed. Whereas on my boat it seems it will barely speed up before PP "fights back" and takes back over immediately.