I have a screen door 36x93 with 2 rollers on the bottom corners and 2 on the top corners. I live in IL and no surprise that the bottom ones in particular are not rolling like they should. I picked up a set from ACE that are Prime-Line B 702 but know they too will rust and the screws for mounting look smaller that the existing ones. Wondering if you have thought on SS 84-074B or 84-074 as replacements. Have included pics. RonĀ