Ok so after modifying about 20 of these primer caps I am having mixed results with them, sure the needle doesn't stick in the seat but I am having problems with some of them not shutting off and flooding the motor. My next option is to buy 100 of the primer caps and needles from the Carbymaster and see how they go. To get them at a decent price I have to buy a hundred of them so if anybody wants to try them I can get them for you at a decent price. Problem is postage of these in Aus is about the same cost as the float needle and primer cap