Hello everyone, hope all is well! I wanted to bump and revisit this. Was wondering if anyone else was running lash different than the .28/.30 Mopar recommendation? I still have my same combo of Aries domed pistons/ open chamber W2's and the .590 Purple Shaft. I did set it to .25/.25 cold and didn't notice any difference. I would like to go a lot tighter (.18/.20?) to see if there would be gains. Do you see any possible issues? Thanks again for your help!