When I moved my 950 3 barrel from my truck #28 squirter to my hot rod i had to swapped all the way to a #40. The demon I had to buy new squirters as they don't make any different sizes for the 660 center squirters and drilled them out, one size at a time until I got it. Factory is 0.025 and I drilled 2 to 0.033" to fix it.