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Hello, glad to be a part of the community. I’ve almost finished my first Tamiya project in years and I’m having a problem with drive issues. I bought a super cheap but very clean used TB-03D to do a rally conversion (rally block tires and wheels, EVO III WRC body). I’m running a stock gearing of 64t Spur and 23t .06M pinion. I believe the previous owner installed a one way spool in the front because the car basically has FWD only and zero reverse. I get no wheel spin in the rear. I assume I have to tighten something in the diff or the drive shaft/spur, but no idea as this is my first Tamiya build in over 10 years. Any help/tips? Link to a short YouTube video of the problem: