Forger the pinch test the diesel does just the reverse if it too lean it will slow down and stop as it leans not speed up, richen slowly
while adjusting the compression a half turn or less in or out on the compression screw and you will get the right balance of running
after doing this a few times you will have the sweet spot on the money you may need a yery slight touch up on the needle too
a little triva here also one the guys I fly with has a friend that "went electric" on one of his 60 size planes spent $1200 on the conversion no that is not a typo but he does have 2 lith. flight batteries