How can you tell if the rear dirveshaft is binding when being flexed? I am SOA with BDS 2" packs and the front flexes great <IMG SRC="smilies/biggrin.gif" border="0"> but the rear doesn't seem to be flexin very well <IMG SRC="smilies/mad.gif" border="0"> . I rerouted and lengthened where neccesary all the brakelines, etc and I even took the shocks off for comparison and it didn't get any better. The only way I can think of is to take the rear driveshaft off and flex it. BTW I have a JB SYE and Tom Woods Shaft. <IMG SRC="smilies/beer.gif" border="0"> <IMG SRC="smilies/beer.gif" border="0"> <IMG SRC="smilies/beer.gif" border="0"> For anyone who can help.

You just answered your own question <IMG SRC="smilies/biggrin.gif" border="0">

Take it out and see whassup!

Are you still running a trackbar in the rear? If so, yank that sucker off.
If you run a anti-kickback shackle that will somewhat limit flex. The mount is in the frame rail and you don't have the length of shackle or full movement as in the front.

Or you could look for shiny little smiley faces where the yokes would contact in a bind for spicer type shafts.
If you are thinking the CV is binding, chances are if you are going over 20 + degrees of shaft angle, it probably is binding.
I think that's why Jesse makes a high angle shaft.
If you want one local call Oscar at Az Driveline.