That picture of the driver is absolutely horrible. If you don't have access to the correct length bolt as recommended by JimD, do you not at least own a hacksaw? The juggernaut, torque-a-verter, and the other one you mentioned, are only useful on modified, ungoverned, high rpm engines. And even then, are highly overrated. I have one on one of my karts with a very modified engine, and would not spend the money on a second one. Once you get your TC working properly there are ways to modify the stock one to equal the juggernaut. Honestly though, with a stock 5hp.engine you aren't going to benefit from TC mods. Just clean it up and get it working properly. Tons of videos showing how to do it.