small blk rocker geometry

Guys,

I need some input here on how high is to high to shim/raise a rocker shaft in order to get good rocker geometry. Here's my issue. I'm running Eddie heads with Hughes 1.5 rocker arm kit. My cam is a Hughes hydraulic roller with .533/540 lift. When I first checked the tip wear pattern I was way back on the tip towards the intake side. In order to get anywhere close to the middle of the valve tip, I had to shim up the shaft .120. I checked the wear pattern and it still looks like I need to go higher! Is that possible?? Is there a limit on how high you can go? I'll try to attach a couple of pics for you to look at.