Maxx Transmission problems...

[Nick]

When I put on throttle it makes a high pitch noise, like the teeth in the gears (not the pinion/spur) are not touching properly.

When I change gear, it changes but sometimes doesn't and I get a loud wooshing noise because the gears arn't meeting or the same high pitch squeel.

I've opened the transmission up and all the gears are in tact, no bad teeth at all. They all meet.

The only problem I can see is that the gear changing slider isn't changing the gears fully and it only goes some of the way, yet I have fiddled with it for hours and it doesn't fix my problem.

I'm really confused because I have re-built the transmission properly several times now and can't understand why the gears arn't working properly and I have hardly any power to the wheels.

The gear changing server pushes the bar all the way in and pulls it out all the way too, so it can't be that either...

Please help, thanks.