Shimming it looser, may increase your RPM til it blows up. Raise the motor 1" and get a new propeller. This will do more than all the blue printing a gearcase can ever gain. Get the gearcase out of the water. (Less drag)... Sharpen the skeg...
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Hi mate you can get the gears lapped so they mesh together better . Haven’t heard about shimming tighter.
Haven’t tried tranny fluid in mine yet haven’t been brave enough. They reckon if you do you should change it after a couple hours. But they say it works.
Grinding reverse gear off helps , can also trim a bit off the bottom of your skeg. But it’s minimal gains.
I don't mean shimming it so the gears are too close together, just taking the tolerance closer to what it should be from factory.
Hey Jake, lapping looks like the way to go thanks mate. Did consider removing the reverse function but the rules say it has to be able to reverse.
cheers