Drive line vibration

Hello, I seam to have a new vibration between 30 and 55. It's only under load so don't think it's the front diff again (if that went again the truck will be traded in). I have already had the rear drive shaft rebuilt and I recently lubed the u joints. Have the truck lifted to 2.5 front and rear. No carrier bearing drop yet.
Any ideas what to check?
Thanks

 

Check your drive shaft angles and see if they match uP. theres a thread about how to correct this.

 

Thanks! For some reason search and my phone don't play well together.

 

do you have the iphone? i have been having problems with tacomaworld on my iphone and it searching the forum. real pain in the ass.

heres the link for it man
http://www.tacomaworld.com/forum/2nd-gen-tacomas/153050-just-fixed-driveline-vibration-free.html

 

Yep iPhone issue, found the link when I got home but thanks for providing it!

 

There is a carrier bearing drop and a degree shim for the rear axle. 3 degrees or less is ideal. If not, split the difference between the two rear shafts.