Terminfo/termcap problems with ibm3151

[Dr. Scump]

I have almost-perfect terminfo and termcap entries for an ibm3151.
However, each has an annoying problem of its own:

   a) the terminfo entry has the following problem in vi:
      deleting a line (except the last line(s) of the file) results
      in the line being marked with '@' rather than moving up the
      rest of the file to overlay it.
   b) the termcap lacks the above problem (works OK under vi on BSD)
      but has a different one: scrolling upward using ctrl-u scrambles
      the screen.  The cursor doesn't move upward, and each line in
      the scroll range in turn overlays the current line.  The terminfo
      entry does not have this problem.

Can anybody point me to the appropriate capnames that are the culprits?
I've converted the termcap to terminfo using captoinfo(1) and compared
the differences using infocmp(1), but there are a lot of differences
so it's tough to isolate.  The obvious ones seem to match...

Or, if anybody has working ibm3151 termcap and terminfo, that would
be nice.  The terminfo in question was copied from an IBM RT.

Thanks in advance.

--
Alan S. Denney # Informix # aland at informix.com # {pyramid|uunet}!infmx!aland
 CAUTION: Objects in terminal are closer than they appear...
 Disclaimer: These opinions are mine alone.  If I am caught or killed,
             the secretary will disavow any knowledge of my actions.

 "These tests will have no effect on your grades.  They will merely
  determine your future social status and financial success, if any."