RXT shim questions

So I originally had stock leafs with a 2” block measuring 25” hub to to fender on my 2nd gen. Currently I’m on RXT leafs option 2 and around 25 1/2 hub to fender. Now I’m getting a shutter only on take off , so far I was only able to measure my rear DS at 8* . Is it common to just do a 3* shim?

 

I did a 3 degree with them on option two and have not had issues. I also did the carrier bearing drop. That being said it seems experiences vary among folks who have done it. Probably a good starting point though. I actually have not gone back in and measured angles since I am not having any vibrations and it has been about 1500 miles since my install

 

thanks for the reply , I did a CB drop but noticed the DS sits pretty low in the CB still. I was reading its 1/4” of spacer for every 1” of lift . If that’s the case I’m close to 3.5” over stock in the back . Maybe I’ll try adding some more spacer?