Shim with 3-leaf AAL + Overload?

Hello

I have a Wheelers 3- leaf AAL installed in my 2015 TRD OR without the overload.
I have an extremely slight vibe at around 60 mph. Almost not worth mentioning except....

I want to put the overload back in and since I'm going to be in there would adding a wedge/shim potentially help with that vibe?

If so, what degree shim is recommended for only 1-2 inch lift in the back? Headstrong has 4 or 5 different options to choose from.

Steve

 

After additional searching it looks like I won't need them

 

I have the same 3 leaf Progressive AAL from ICON. I used no shims, only the Carrier Bearing drop kit