piston 2 valve clearance
 

anyone know how to check piston to valve clearance? and has some free time to help me out with my heads cam install, i wanna check the clearance so i know how much i can mill the heads (there 799's) I'm hoping to get started on it this weekend, please someone help, my math sucks and idk how to do all that close measuring, and I'm not even sure i have the tools, so let me know if you can lend a hand, of course there will be a beer or pizza or both involved, i live in clifton

Also does anyone have 2 solid lifters that I can use when I check the clearance? I promise I'll give them back haha