it might be too late, but is there any way to re design, re-fab the mount, so you will be able to lower or remove your crossmember WITHOUT having to disturb your front axle arrangement?
I know its more work, but it absolutly SUX to have to secure the whole front end of the jeep, just to say, remove the transfercase....
not to mention, and I found this out the crazy way, it sure is scary having a pair of coil springs storing energy against a loose front axle....it really sucks when one of your chocks quits doing its job, and the springs SPIT out your front axle, and it runs your ass over!