Just curious, when I measure my front axel the passenger tire is about half an inch further from the frame than the driver side and in the rear I'm about a quarter inch further from the frame on the driver side. My Jeep tracks funny at speed. My 35 inch mtrs are pretty worn so I know that could be part of the problem. Do you think those measurements are bad enough to cause problems?
Since you have adjustable track bars by all means center your axles under the frame. Try to get them within about 1/8" side to side. Measure from the frame to the inside sidewall of the tires. Be sure not to measure tire lettering and have the tire pressures reasonably close.
FWIW, I once measured axle centering on a random sampling of stock JKs on our dealers lot. Consitently the axles were set about 1/8" further from frame centerline on the track bar mount side (I.E., on the driver side in front. passenger side rear). This makes sense as the rigs were unloaded. Add a driver and a full tank of fuel, the vehicle will squat a bit and pull the axles to the center.
'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.