rear glass trim install

While my car was out getting painted the painter removed the rear glass trim, in doing so he broke all of the mounting clips around the glass. I have since purchased new clips and installed a new vinyl top. The problem is that I cannot mount the rear trim clips due to limited room between the glass and body. I am trying to avoid removing the rear glass to mount clips, has anyone had this same problem, any advice would be appreciated, by the way the car is a 1972 dodge dart.
Is this problem all the way around or just one side or top or bottom? Are you sure the clips are identical to the old ones?