nigewi

hi there , im a newbie and not only to this but biking as well , i have a fz750 (my first bike ) one of the previous owners has changed the swing arm and rear wheel to fzr 1000 , after looking at the shocker this morning iv noticed that the bottom of the coil is stuck against the the swing arm , it moves up freely but cant drop down any further , was about to fit jack up kit but its impossible due to shock catching , any advice on what i could do please cheers nigewi