Speedmaster Stainless Rocker Arm Issues

Wondering if anyone is running the stainless rocker arms that Speedmaster sells on a Speedmaster, Edelbrock or other stock type replacement head, and if they have any issues with rocker body to spring retainer clearance? Was watching a video on Youtube where someone had setup the stainless rockers on a set of assembled speedmaster heads and there was obvious retainer interference issues as is. The rockers in question are below

Mopar Chrysler SB 318 340 360 1.6 Ratio Stainless Steel Roller Rocker Arm Set

I have already purchased the assembled SM heads and rockers linked above (yet to have in my hands to check myself though) and I am wondering if others have had this issue and what can be done to correct it? Shims of some sort maybe?

Any experience with these parts or suggestions is appreciated.
Thanks