I have twin 496's and rebuilt outdrives(1yr old) .Around $5,500.00 to have outdrives rebuilt, the boat has TRS and not sure what is wrong in drive train? I'll put boat in drive at low idle and hear a klunking that sounds like gears grinding in the Starboard motor and will stall the motor? But running full throttle or high rpm's it's fine? Checked the fluids in trs,outdrive and is at proper level. The out drive has a reservoir and dip stick under hatch, does the reservoir under hatch fill the complete outdrive. Or do you have to pull plugs on drives to fill them separate from the outside also? This is the first time with this set up,( trs's and drive set up) I'm ready to go to the guy that rebuilt drives and ask him whats up, but afraid he will say well it's the trs's not the outdrive, and don't know what to say to him with out getting riped off! Does this sound like it could be some kind of adjustment or a bad big bill? The boat does not have allot of hours on new outdrives and don't want to get the shaft on this one! HELP!