After I installed the two new belts and the 4 new pulleys two weeks ago, I did notice that the rear belt was more loose than the front with the settings Tamiya gives you in the install/setup sheets with the new parts. Even after replacing the rear belt last night, the two week old front belt was still tighter than the brand new rear (just by feel... lifting it up and feeling the tension)! I will try tightening it up by one 'notch' on each side. Thanks for the reply!
Next?...
