Hey guys.... I have been having an issue with my passenger side window. It had a 1/4" gap at the top rear of the window. Today I had a friend of mine who use to be a mechanic notice it. He told me too roll the window up as he pushed on it. It goes into the seal groves, but the top rear of the window isn't right. It seals upto the sail window fine. He said he believes its not a convertible window. Its a mustang window but most likely a coupe or from another model year. What do you think?