DOOR GLASS CHANNEL FELTS STRUGGLE!

Having trouble with my new kit, part #MN3104 I got from Classic Industries.

MN3104 - 1967-74 A-Body; 1966-70 B-Body Front Door Glass Channel Seals

I tried to to slide the glass down the new channel felt with the new clips, and experienced strong difficulties! It was way to tight, and I ended up ripping up the new felt channel. Before I try the other door, and order another kit, has anyone else experienced the same struggle?

FRUSTRATED!!
When I did these on my 70 Duster, I learned that there is a specific direction to insert the glass back into the channel. It is wider at one end, to allow for the glass to slide in, and then it gets tighter to create a wedge for the glass to slide into.
So, make sure you are going in the right direction when installing the glass.
You can see what I mean in these threads... It also shows a way to work with a ripped felt channel.

Pop Out Window Resto - Part 1

Pop Out Window Resto - Part 2