I would degree the cam with only #1 rod and piston installed. That will tell you if you really have an issue. I have seen five degrees have a huge affect effect with a solid roller. Personally, with a solid roller and a stock cam location I always do #1 by itself.
Yep--5 degrees and she runs or hits--can really make a big diff--do that and it might clear up FWIW I use a copper wire about .050 as the feeler guage--easy to bend around and check where you can't see so well the very first 572 I ever did / same way / degreed cam and Viola! no issues
