I have limited experience with karts raced for 1.5 years a while back. The success we did have was almost definitely luck lol. So my questions is should I get the video series prc sells to boost my over all knowledge or get the tech tools to build engines ? Little back story here, I'm a machinist and we are now going to be letting my son race red plate, if I let him do it his younger brothers are going to want too ( 3 more boys ). I'm not gonna be able to afford to field three built motors unless I do it myself.