A handy person from Dalton, GA says:
October 27, 2013
I need a new channel balance and I've got a question about it. I've attached side-by-side pictures of each end of a broken one with a functional one. I'm pretty sure the Series 770 is the replacement I need, but the plastic piece at the top end is shaped a little differently. Would it still work?
Tom from SWISCO responded:
October 28, 2013
I agree, our Series 770 appears to be a good match. I don't think the style of the plastic screw-way matters. It's a pretty basic piece.