A 5/32" allen wrench did the trick, thanks. A 1/2 turn increase raised my fuel flow to between 27.2 and 27.5gph at takeoff power so I'm satisfied with the result. The idle RPM increased a bit so I backed off the idle stop screw, and will play with the idle mixture screw if necessary. Thanks aga...

I've been having trouble controlling my CHTs on climbout lately, so I went back and checked my engine logs. Max fuel flows are around 25.2gph, but SID97-3E says the range should be 25.6-27.3. I want to increase the high end fuel flow using my fuel flow gauge (which is accurate to withing 1%). I foun...