Took the car apart yesterday to check out the problem...
Found that the slipper shaft was straight and true, so I don't think it is this. Checked for slop around the slipper shaft spur bearing with the gear top off and the movement around the bearing was quite bad. This affected the belt tension on the middle belt a lot, and their were black marks on the back of the belt (non-toothed side). Around the bearing holder, the plastic had 'splayed' out creating some 'flash'. This was obviously the slop.
The spur was also in bad shape and the teeth looked 'flattened' on the top. Inside the tunnel under the spur gear, extra plastic from the chassis had been worn away. Overall I think this is bad design on Losi's part. The front slipper shaft should have 3 bearings on it to support it properly There is . The bearings should also fit in housings which can wear, then be replaced as per the rear layshaft, rather than buying a new chassis as is my case!!!
Thanks guys
Mark
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