Go the doggies, don't mind a bit of chicken. Hope you had a good weekend Shaka, (doing night shift myself). With the cylinder he took the 2.76mm off the top, that gave the current port map,I think this one was a little better, you know, practice and all that. The piston is a little high at the front but not at the rear, I suspect my sanding of the spacer was not too good so I will try to get some of the 1.6mm material tomorrow,if that gives a little too much piston at top I can adjust with gasket thickness. I haven't rechecked squish yet, will try to sort the base first. The head recess was 0.78mm, head gasket was 0.5, so that gives me about 1.28mm to work with. On it goes, progress is slow but at least it is progress.