Roller Rockers Geometry

I would like to ask you guys a question. I have drove my car with the 360 for sometime now and never had any detonation problems until today! I wouldn't think changing rockers would have anything to do with that would it? The motor runs smoother it seems than it used to.

I'm running 10:7 compression on 93 octane fuel. Maybe I got a bad batch or something but I would hate to have loose compression or have to run race gas. Any thoughts?