Hey there dude, well, i'd have to say ya shoulda woulda coulda ! send the z saddle back to aaron for the modification while you lap in the rest of it and when the saddle comes back lap it too. then with moderate gib tightening you should have it. when adjusting the gibs, forget about the gib locks for a while and make sure that they are backed off and stay that way. only use the gib locks when really needed and don't forget to back them off, they will put dimples in the back of the gib and they will cause a localized wear pattern and you don't want to start off with any interference in the initial setup. I am going through the same process with a full cnc version 3 of which is the very same v-3 pic'd on aaron's website, He shot the pics and boxed it and now it sits in my shop ! and i will say it is a nice piece of work. you have a solid machine, the whole idea is to take over where the chinese left off and make of it something that will work for you, and it will do that for sure. as for the head tramming in too within .005 you can get a cheap feeler gauge set and put one in underside to shim the head to level, if it still be off then change shim. have fun, and make some chips. I should be making chips real soon too !