If you can't feel it, I wouldn't worry about it honestly. I mean, obviously your driveline angle will be off a little bit because you lifted your jeep 2.5" higher than it was stock... So yes it will be a little off of what it was stock, but usually 2.5" isn't enough to need any correction. I have the same lift (Dirk is amazing right?! haha) and I have some driveline vibes. But I got the heavy duty springs from him to support my spare and a rear tire carrier but I haven't put the rear tire carrier on yet so that'll weigh it down a bit. I'm waiting to do that before I fix it the expensive way.
1998 TJ, 2.5" OME springs, OME N66 & N67 Sport Nitro Shocks, 33x12.5 Goodyear MTR's, Metalcloak front trackbar, JKS rear trackbar, Metalcloak aluminum front arched fenders, Metalcloak aluminum front bumper, thedirtworx tire carrier, Warn xd9000i w/ synthetic line and TRE Safety Thimble II, Monstalined interior