I've skimmed over the amazing pic tutorial Norcoredneck did at the BBQ Brethern forum, but I'm still just looking for basic universal measurements and whatnot. You know, just a simple list of where to drill this or where to drill that. Also, I've noticed that some people have 4 intakes on the bottom of the drum while others only have 3. How much of a difference will that make? Also, for the intakes I see that most only have a single valve ball on one intake with caps for the others. Wouldn't it just be easier to install valves for all of the intakes? I really don't know what I'm doing here so any advice would be appreciated.