Hey guys. I have a 1998 k1500 regular cab with a rear slider window. The problem is due to the fact it's a regular cab and I actually used the slider window. My weather stripping on the top and bottom of the slider has almost hardened and is pulling out if I open the window. One of the seals is already gone and leaks. Has anyone ever found somewhere that has this stuff or should I just replace the rear window. Ay help would be appreciated