I have read and I think followed many of the tuning tips on here and also Tom Bowmans "How to build a Fray car". I have managed to turn my 8th place cars into 6th place :hat:. After looking at the thread about t-jet tools that looks like a NASA/NASCAR group effort I want to take my cars to the next level. I match the magnets, find a com with equal poles and that is prettty close to balanced, (I have even balanced one to no avail). I wire brush the gears and then break them in with rubbing compound. I boil the chassis and make sure the axles turn smooth. The cars are better but I know I am missing something. What Amps should I have at what Volts when the car is hooked up to a power supply eg .15a at 12V? Are there other tips any of you are willing to share. Everytime I think "this is a great car", it's sounds smooth and seems fast in practice it turns out to be a strong 6th. I am sure I am not alone in wondering this, thank you in advance for any help.