What is the difference between model 23-027, 23-196, and 23-093 they all look the same as the one that i need, but mine have a adjustment screw in the back of it?
Paul from SWISCO responded:
May 19, 2016
The 23-093 has a spring loaded top wheel, but it sounds like you need one with an adjusting screw. The 23-027 and 23-196 both have adjusting screws, but the housings are a little different. You will need to match up which housing is closer to yours.