I am new to screen printing and haveing some troubles.. I have a fairly new Printa system in great shape and I am having problems with my registration moving slightly while doing two colors... Is it common to make slight adjustments during a job or once i get everything fit should it stay.. Second im having problems with getting a clean print onto my merchandise (shirt, hoody, etc..) sometimes it stays dull even with 3 or 4 swipes, other times I seem to just get missing parts in a certain part and when I go back over it I either end up smuding to much ink or getting a super think uneven surface to my print... Also how high should a screen be off the product.. I know there needs to be some seperation just thow much exactly?? Thank you so much for help and any advice will be greatly appreciated!!