I'm having a hard time trying to remove the chaincase on my 2002 viper. I have all the gears removed and everything out of it, the case is unbolted and somewhat separated by about 1/4 inch. The problem is I cant get it any further...it like something is still holding it??? What do I do from here, I have soaked everything with PB blaster and let it sit overnight and it still wont budge and further. It seems like its loose around the lower shaft but still holding tight around the upper shaft.