Mmmmmm. It is too big. Try smaller diameter, and increase the width. You will have a better center of gravity and balance. The extruder must not do a lot of force to carry the filament. It is preferable less weight. You donĀ“t need 5 lbs of filament to do one print. You need a little brake, if the wheel is too fast, without tension. I hope you can solve the problems. Good luck.