Ok so I am still new to not only 5th scale but to RC cars/trucks in general. I just purchased a XT and a MT both at the same time. I decided to upgrade the MT first and I've done ALOT to it already and been working on it for the past 2 weeks upgrading on it. I just now finished and decided to start it up but when I do it feels like its struggling to start moving and spinning the wheels. My XT as soon as I touch the gas it wants to get up and go. Now I have replaced all the servos in the MT I also upgraded to a clutch with performance shoes and the 8k spring is there anyway I could have the clutch on "TO" tight? or I have something to tight to where it has to rev pretty high to move? I have to give it about half throttle for the truck to start to move.