I've read about that on other forums etc, the outer casing wears around the bearing, causing the bearing to get sloppy, which causes the shaft to move and cause a sloppy gear mesh.tomhugill wrote:Had the outer bit of the case that holds the bearings worn then causing the wobble?
Have a read through this Tom, you've even made a post in it.
DKLM gearbox - RCU Forums
https://www.rcuniverse.com/forum/rc-tan ... arbox.html