vibration after "redi-lift" install

I recently had a levelling kit installed. 3" in front with 2" blocks in the rear on a 2012 TRD off road. It sounds like going over a rumple strip on a cold start, then fades away after. I have heard complaints from other people about this, but no remedy. Anyone out there have an answer?

 

I also have the ready lift 3'' front but my rear has 1'' blocks with about 40,000 miles on it with no problems.(rides great)

 

Did you have to go with longer shocks?

 

Try re-torquing your u-bolts to 100 about 80 ft lbs in a cross / star pattern.

 

No used the shocks that came with it no issues at all!