Hi carbymaster, it would have to be such a small spring and it would be such a balancing act to get it right. In all fairness the failure rate is probably about 10%, which is very annoying at the time, and much worse if somebody has only bought one and they still can't get it to work. At least I am able to swap needles and primer caps and eventually they work fine. As for the spring I appreciate what you are doing but it may just complicate matters with the needle not shutting and flooding the crank, and this can happen in the blink of an eye. The next question that needs to be asked is how many more full cranks and Powertorques are going to be salvaged and who apart from the few of us here are trying to save the last of them. Sure people will keep buying needles and bits for them but the number seem to be starting to dry up. The other issue with the float needle is that the average Joe Blow puts in a new needle and because of the design of the carby it is impossible for him to know if the needle is sticking or not so they give up
