I'll try out those pressures.
I'm finally back to carb tuning - I have the largest main in the carb currently, I believe it is a 140. It doesn't take throttle well when the engine is mid-range. If I'm going slow it is super sensitive to changes in throttle position as it should be. But if I'm running 15 or 20 and quickly open the throttle it bogs a little. More than it did with the smaller main. I also get backfiring/popping on decel.
But, I did a plug chop and at WOT it is lean.
The plug I am running in the buggy currently (that I pulled out when I was ready to run the plug chop test) shows signs of both rich and lean conditions IMO.
This makes me wonder if I'm rich down low but lean top end. Perhaps the lack of backpressure due to the DIY header has something to do with it? I'm open to suggestions.