I simply pulled the engine down and had the block machined flat... it only took .010" to get it flat.... it was pretty bad.
Also, my oring protrusion was a little too low so with the fresh cut block, I was able get protrusion back in the .015" range to see if that will help. I had to cut quite a bit off the pistons to get cam clearance so I can run a stock head gasket again. I'm a week or two from being finished so we'll see how long it holds up.
The last gasket held 5 pulls on the dyno before spitting out oil and coolant. The gasket before last held about 40 dyno pulls, then 4 or 5 passes down the track, then let go on the dyno at a dyno event held after the drag racing.
If mine blows this time, I'm going to firerings and going to do a whole new engine at that point, I'm ready for a reliable engine setup so I can focus on new turbo(s), suspension tuning, and just racing...