Read your post about your basement AC. I did mine using Duners instructions last year before I sold my Itasca. While you have it out, replace the metal squirrel cage blower assembly with a newer and improved plastic one. The blower cracks, gets out of balance and takes the bearing out. If you still need a bearing, I have an extra one, got mine from Grainger. Once repaired and reinstalled, it will make a works of difference. Let me know if you still need a bearing.