Anyone else having an issue with the canopy? I don't think I have the blind nut issue that they included the "fix" for, but I cannot get it to seat properly. the white forward pins are good, and flush with the front bulkhead, and the forward two tabs line up nicely, but the rear seems as if it is catching or hitting something. This is my first model with a removable canopy, so I don't know if there is a common fix for this problem or if I'm just ignorant. I don't want to be too aggressive with the exacto or emory board yet.