I made the puller tools on a lathe and it worked alright, you need a high grade steel bolt with grease on the threads for whatever route you take, a low grade bolt will strip out. Its important to get the spacing right without having to move them in and out. Take a measurement from the inside of the old left side one where the inner bushing touches the head to the flanged mount of the frame, and install to the same dimension so your pedal doesnt hit the variator. Set the right side one with the same gap as the old ones between the left and right where the head fits. I made a gapping tool out of a wood dowel to set it. There is probably a spec on the gap.