So I read up somewhere that when you preset valve lash I know you bring piston TDC and all but do you set the lash on the compression stroke or right at TDC I ran my motor this past Saturday I did get rid of the smoke and got rings seated. first time out on motor ran good 2nd time my intake valve lash came loose but I set it at TDC but of course both valves closed I feel I did something wrong besides the rocker backing off?