I have for a while been experiencing false neutrals on my tiger cub gearbox ,has anyone else had this problem,what was the fix ?

HI, you might have sorted this already but: 1: shimming the gearbox. If you have too much play on either the mainshaft or the layshaft, this can cause false neutrals. 2: If you are running a trials top gear, the 16 tooth layshaft gear is interchangeable with the 16 tooth first gear. However, it is thinner, and if you have inadvertently got the 16 tooth layshaft gear where the first gear should be, you will have a load of play on the mainshaft. 3: If the crank case bolt that comes from the left side of the crankcase is too long, it pressurises the selector spring and prevents it changing properly. If the selector plate is badly worn, that will stop it staying in gear correctly and could give false neutral. 4: there are 2 spring loaded teeth on the selector shaft. If these are badly rounded, and/or the springs are weak, again can cause the problem. It is worth doing a general inspection of all the dogs on the gears, to be sure they are not badly rounded. Good luck! Duncan, Armac Design