I finally got it done! Tried lubricants...It helped some. Tried the expensive window screen roller... helped little, maybe I didn't have the knack. There were no crimped areas on my channel but I bent it open a little bit. That really helped. I think the part that eluded me was that the whole channel was evenly crimped, making for a tight channel. Opened it up a little, slid the weaterstrip in and hammered it tight..a little. It went ok, but of course it was on the very last leg of this pita installation.
