I have built a go cart out of a old 2 seater frame and a gx160 honda engine for my son. I bought a cent. clutch and welded a new base under the frame. The engine has a manual adjustment for the throttle(sorry no pics). What do I need to do to hook up the throttle cable? Is there any special parts or do i just need to loosen the throttle lever pivot nut,attach a spring and then the throttle cable?