A wise man told me when I asked this question on this board was to go back and clean the machine again - to really scrub it. and tracks 1 and 16 magically worked again, until I put the old alignment tape back in. then I had to clean it again and throw out that tape. if you don't know how to properly clean the machine (which I should assume you do because you aligned the heads) then use the search function at the top (I see this is your first post) because this question has been answered many times. I would search the Analog forum, because there is a lot of advice there on this problem in general, as the E-16 is not the only model it affects. There are other potential causes, and they are all probably fixable in one way or another, but this would be the first place to start.
