Sorry to hear of your problems. If you have spoken to the shop that did the install, what did they say? Is this the same sound / symptom of the original problem that changing out the gear was to fix? Did you see the gears that came out - anything visually observed as the original problem?
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.