Help Needed

[Eelco]

Hey Guy's,

Hope you can help me out here. Bought my self an Losi XXX-G4 as an plaything besides my TQ. Want to race it with the Novak GTB. So got my kitt a few day's ago and started building it. Not entirely new tot he hobby but still i have an major problem. The kitt comes with the Heavy Dut main drive belt and Belt tensioner, tha manual say's i should have an 3mm / 7mm play on the drive for optimal preformance, but i have way more than those figures. Has anyone who ones an XXX-G4 the same problem or am i doing something wrong here?

Thnx