I talked with the Tech @ VP(Super Nice Guy)who was very helpful.He said to go down about 5-8 sizes on the return pill to richen it up for the M5. I run #40 nozzels(he said no need to change them)with a #88 pill(jet)in the return line he said go down to a #80 pill unless I thought I was on the rich side and if that was the case only go down to a #83.
Maybe between all of us sharing info. we can get the M5 dialed in and working at the start!