steady

So she is running again after replacing rusted fuel tank and cleaning carb jet blocks. Idles fine except when warmed up then it isn't as steady. Synched as well. AF mixture is front carbs 5ish rears 3.5 ish based on a post by previous owner (Garrett). As luck would have it he posted they were...

Bike runs rough at steady throttle. Seems bad at any steady speed almost like it's missing or cutting out.. Just had bike at shop for this problem they dyno'd it and jetted it and did carb sync. Told me to come get it but still same issue... Any ideas? Morleys jet kit Kerker pipe V boost...

When attempting to hold a steady RPM it feels like it's missing, popping. A little bit of popping when off throttle and decelerating. It has come on gradually and is now pronounced, it is especially evident in 1st,2nd. It pulls normal, I think. Sync is good, new plugs,wires. Thanks Tom