On my 50 chev 3100 I have the drivers door glass out and want to change the glass run channel. but the the lower channel at rear of door is too narrow to accomodate the new glass run which seems to be the same as what came out .. when i removed the run a while ago I did not notice if the run went all the way down into the lower removable run, I just assumed it did, could that removable run been changed at some point , it does have weld spot on it .. maybe I can spread it enough to get the run in..It acually looks like it had its own built in run because the edges of it have a stainless bead on the edge and remnants of felt . any Ideas would help ....thanks Fred
