Rehabbing 40+ year old Montgomery Ward extension ladder given to me by my FIL. Aluminum ladder still in good shape but all hardware badly rusted and in need of a refresh. So far I have replaced inop rung locks with a Werner kit and replaced dry rotted stand off bumpers previously held on with electrical tape. I have a new rope and plastic end caps on order and as well as a pair of Werner PK80-2 Automatic Leg Levelers coming that I scored on eBay.
Note the flimsy OEM rung locks
New rope pulley
New stand off bumpers