I;m having problems installing wind lace in a chev 49 1/2T cab. I can't get the rubber into the channel. It looks like the rubber wind lace should slip into the channel and slide around - not a chance of that. I can get perhaps 12 in to slip in but that's it. What do you use to compress the wind lace "t" to push into the channel. any help or suggestion would be appreciated thank you in advance Chevhelper
