I have had three different engines build by Dave and had issues with every single one. The dyno sheets are suspect but the lash of 0.007 is correct though I got 0.006 for the 3.2L. I had to cut a feeler down to fit into the smaller opening. The 3.2L or should I say 3.1L based on the measurements taken after we took the motor apart 2 weeks ago dyno'ed at 358hp by Dave but only 273rwhp on a chassis dyno. That much hp loss would equal enough heat to fry my tranny and/or diff, so we just threw his dyno sheet away. All three engines were broken in and Dave recommended Penn oil. I normally run 100 or more octane gas so when it started to make detonation like noises I was on the phone with Dave a few minutes after turning off the engine. Another dyno day. All good. Four 30 minute sessions over two days at The Glen and all but the rings on piston #6 were toast. What caused this to happen, no one knows. What are we going to do to prevent it from happening again you might ask. We've installed a cockpit fuel pressure gauge, a second O2 sensor, reconfigured the fuel delivery lines and filters, and installed EGT sensors. Next up is a different dizzy. We will replace the N42 head Dave did and the Mikunis he supplied with the E33 head and Solex carbs from the original #33 Bob Sharp car. I'm waiting to see if the sonic test shows we can go out another thousandth to accommodate the coating we'll apply to the existing JP pistons (no Dave didn't coat them). We'll rebuild it as I don't want to wait 6 plus months for it to return nor pay Dave to do something we can do ourselves at this point. Once this is done we'll take it to Williams Racing and have it tuned on the engine dyno. It will be set up to run middle of the pack times but made to last a full season. I can only hope those in front of me have engines that fail.