ok so i went to go change my spark plug tonight and it started out pretty smoothly until i got to the middle back one my problem is that i can not get it off i have tried everything... using 2 hands, tried pulling off with some pilers, tried prying off (i don't really care if i have to get a new wire) any other ideas of what could be holding it on ? it spins freely o i also tried wiggling it around while pulling on it