Theres an easy fix for that without needing a firmware fix which will probably never happen. Use a beam or Yagi antenna (ie: dierectional antenna) and point it at the tower you want to hear, that solves the issue.
If you look hard enough you can find them for $10 used or even $30-$40 new. The beams are pretty small if it is for 800MHz systems.
V
Except when all three towers in a system are all within, say 15 or less miles. And they are all East of me
Plus, the beam doesn't go well with the radio's belt clip while walking around!
-- Kevin