HoC,
Back in the early '90s I also had a 7.5" Redhawk .44 Mag. with the rings, and a 5.5" .44 Mag. They were nice guns. The only thing I did was to change-out the front-sight insert to a brighter red one. They were real shooters.
Recently, I found a Redhawk, NIB .45 Colt, 7.5". No comparision quality-wise to my older guns. I had to ream-out the cyl. throats before it would accept a .452 dia. bullet. Then while firing heavy loads, I found I couldn't eject the empties, as there were manufacturing ridges in each cyl. hole causing each case to resist ejection. After two trips to my local g'smith, I "might" have it lined-out. It does group light and heavy loads very accurately, so the barrel appears to be fine. Good luck in your search,