FN!!STtXx!! Window channels

[A V8 Al]

I replaced the (missing) door window channels and regulators on my 1933 T 1 1/2 truck. The regulators are Vintique and work ok (?); but the window channels I bought from Mac's a while back ( Argentina made) are an impossible fit. The large slot access hole is too small, the slot is too narrow and too thick, and the slot is too short. Are there any better alteratives to these pieces of STXx!,...? Ticked off Al