Is this something that can be fixed, or will I just
have to put up with
 it until I change toner cartridges? 
    Change the cart, or at least the photossensible cylinder of the toner
cart (of course, cheaper to change the entire cart hehehe)
  Also, the thing is giving me a lot of paper jams with
the page stuck in
 the paper path after the fuser - sometimes they register as internal
 jams, sometimes as output jams.  It's not consistent, but frequent
 enough to be annoying.  Any ideas what could be causing that? 
    Take a look at the ruber rolls and bands of the paper path, there must
be something slipping.