Fellow Motorheads thank you very much for the provided info,based on the fact you all recommend between .oo4-.006 i'm going to split the difference and go with .005. The keeping of records makes perfect sense,as i work in the metal fab industy i make go/no go gauges on a regular basis and will make a set specific to the task at hand. As for valve train stability i'll be using a Jesel shaft rocker system for the first time that some of you previously indicated would be well up to the task of maintaining the desired stability. As this engine is in a daily driver with full exhaust and no stereo i should have little trouble identifying any changes in valve train noise if any thing starts going south. Again Thank You for all the input.