Chris: when I went at it with extensions I almost stripped the nut! I was using a 15mm deep well socket, a swivel, and a long extension, and it was a no go. Could you please tell me the exact setup you used? What size socket, what size drive, swivels, extensions, etc. Thought I could bang out the install in 6-8 hours, pretty demoralized at this point. Thank you again for all of your help.