Jeff the G3 is an alloy carby, and completely different, it was fitted to the earlier full cranks. The Powertorques were fitted with the LM. If you take the kill switch probes out you can pull the cable too far and it comes out of the cam and then you have to pull the carb to bits to get the cable reconnected. This is why I fit a 6mm bolt in the kill switch hole, does 2 things, I can adjust it to stop the spider from dropping off the top of the cam and it also prevents the cam going too far and dropping the cable out