Thought I might give you a heads up about a couple of different bailey channels on the market.
 
I'm working on a new project car that came with new but uninstalled daily channel (the one on the right in the photo), it fit the door well enough (was a pig to put it in) but the windows were ridiculously tight to open and close, it just didn't seem right. So I ordered some new channel from Smickerau on ebay.  The profile looks fairly different (the one in the left in the photo) but sits well in the channel, was a breeze to fit and now the windows are silky smooth when winding up and down.  Kudos to Smickerau.
 
Cheers,
 
Mark