CLB I see some quotes in your signature. One says "if it's made in china IT WILL FAIL" That is the only problem I see with this big block pump conversion, if the new big block pumps are of lousy quality. If you guys really get into this, you might have to tear them apart before you even run them to make sure everything is ok.Noooooooooo
So if you're going to setscrew the pin, put a groove in the pin to index the screw.
My original mechanical pump lasted almost 30 years. It will still pumping, it just started seeping around the seam of the pump onto the ground. After reading posts on here about the replacement pumps, I did not even consider putting a replacement mechanical pump back on it.
