rocker ratios

I do appreciate your explanation. I did understand the previous message about the 1.5 rockers. I have sent an email to Oregon cams to see what they suggest for a profile.
The new pistons that Kanters and Egge offer,are they same as OE pistons? I have heard somewhere that they aren't the same and that they are lower compression ratio. If that's true,is Wiesco the only piston manufacturer that can make custom designed pistons for the MEl 430? Just considering all my options before I order an engine kit.