Hey what's up. I'm new here. I haven't said anything because I've been so busy reading all the info in the forum. I have a 95 Bronco and I am installing 6" superlift springs in back as I type. Question is- do I need to put the factory shims(angled blocks) in with the new springs or not??? The new springs have a small angled shim built in, but I thought the straighter I can get driveshaft angle with the factory shims the the better. But, the new U bolts they sent me don't seem to be long enough to put the shims in. If I were to use the old U-bolts I could use the factory shims. The instructions don't mention whether or not I take them out or not. Another thing, they are procomp instructions and superlift springs. Anyways, should I use the old U-bolts and factory angled blocks or leave the blocks out and use the new U-bolts??? what's better for the drive shaft angle???