Yet another lean question

All right here is my story.
1982 XJ550 Maxim, Bought this bike 05, cleaned carbs, reinstalled the main jet was rolling around in the bottle on the carb bowl. Drove it for a year to school, then ended up making it into a drag bike and learned how to drag race on it. I have a 4-1 header with a kirker pipe. I did a stage three jet kit, so jetted and no air box. Installed four nice air filters on carbs, sycnhed and have rode it fora long time. She behaves nicely right up until about 70 mph on the high way, and then starts to choke out. I have always thought that she was flooding out at that speed, but i have installed an air/fuel meter on her, and she is leaning out. Plugs look very good, which surprised me. Compression is on the high side, and i am running very large main jets. I am baffled. Did some searching on here.. but still.. i am at 14% a/f at 55mph, 65mph is 14.6%, then 75mph is like 17.5%! I am stuck at 68 mph. At these speeds i should be pulling solely off the main jet correct?
Three turns out idles at 15%, four turns out idles at 12% a/f (these are averages) I can live with lean on idle, but i dont want to burn out exhaust valves on the highway..

 

It may need throttle shaft seals; or you're dealing with an "aero" effect on the pods.

Do some searching on the site for "velocity pods." Using stock rubber airbox boots as velocity stacks (which they are) and mounting the pod filters on them seems to help.

 

If i take the air filters off she would never choke out, but i dont like unfiltered air running through the bike. When i ran on the strip i always took off the filters, and no bogging. I have no room to put on velocity stacks, the end filters are already touching the frame.. I was wondering if maybe the filters where chopping up the air.. If i put the meter back on the bike i will do more testing..