If you are handy, you can order up a flat top valve and install it yourself for MoPower. Alchemy sells parts.
If you aren't handy, what do you want done/expect out of your modded pumpers as I can do the work. Fairly quick turn around after parts needed arrive.
BTW: I don't get P O'd as I don't do this as a living, just for the betterment of our sport, I'll make a few $$ for my time, but nothing exorbitant.