The Masspro's feed roller has a small flat in it, which started causing some spacing issues. Someday I'll get it and the platen restored.
I could have (and probably should have) gone into a heck of a lot of detail about the idea of economics (to get my college degree I ended up having to take 4 godawful years of the stuff), but I'll leave that for future times when my fingers aren't frozen from the cold.