I ordered a new coil, OEM because I didn't want to have to deal with spark plug boots that were the wrong shape or anything like that. Yamaha solves this issue by simply not including a boot. Old wire and boot is on the right, new wire is on the left. How do I swap the boot to the new wire...

I purchased a NGK coil cable and tied to removed the old cable from the coil. I was unable to remove this cable from the old coil. The current cable is now ruined from trying to hard to remove it. I have a 94 and now this this cable is built in and unable to come out in the first place. Anyone know?