If the shackle reversal put the shackle hanger eyes below the frame (rather than passing through the frame) it won't reduce caster......it will increase it.
What kind of tread is left on the bigger tires you put on?.....wider tires with low tread have more of a tendency to follow ruts I the road surface.
'84 CJ-7: Yota axles (spartan locked front, e-locked rear) 4" BDS, 1" Daystar & 3/8" shackle lifts, 35" X-Terrains on steelies, YJ Tub & family roll bar, heater blower upgrade, 4.2L w/MC2100 & Team Rush, Warn 8274. Rebuilt 4.2/4.0 hybrid, AX15 and twin sticks/clocking ring waiting to go in.
The advertised position for a topless, dirty jeep girl has been filled......by my wife. Thanks to all that applied.
<------------and yes, that is her. :-D