Ralph, I had a .19 with the non varijet carb and it worked great, I still have a .40 and .60, the .40s Varijet carb works very well but the one on the .60 was terrible, The .60 now wears an Irvine JetStream off of an old Irvine .40. I think Fiery has the Irvine .40 now with an MVVS 7mm carb. I had to cut the neck down on the Irvine 40 carb to fit the PAW .60.