Rocker arm play

OK.. if from the standard Felpro kits, then it is probably an 8553PT which is around .050" thick. (The Felpro 1008's are .039" but don't come in the kits as far as I know.)

The original would probably be somewhere in the .020 to .030" range in rough numbers. So you may have raised the heads somewhere in the .020-.030" range above stock.

If you have this particular issue, then maybe think about changing to the Mr Gasket 1121G's at .028' thick. It'll help your CR and lower RPM torque too. It would not be any other issue unless you have a high CR engine already (like in the 10:1 SCR range).