Thanks, I'll follow that and make sure there well seated, that's if I ever get it back together, I have some pitted rockers to deal with now, vertical cylinder, intake right hand opener, exhaust left hand both, I am going to post an ad on here as I really can't do new prices at this time, have already spent quite heavy. Any help on cross compatability with models would be appreciated, I believe st4, s4r are the same but there are likely others??