I replaced the vent window but did a poor job, forced it in and there is a gap at the bottom trim/seal. I want to remove the window and try again but I'm having trouble getting the vent window out. The original vent window was shattered so I didn't have to remove it. I took out the bolt that holds the window channel. On my 99 the rear window goes part way down. Any suggestions would be appreciated. Obviously I'm not a mechanic..