Changing the timing belt on a 95 corolla. Having a strange issue where the crankshaft timing sprocket is jammed on to the crank key. I tried pulling and prying it off with various tools. I had my friend who's a machinist try and my neighbor who's been a professional mechanic for 25 plus years. I think I may have to drill or cut it off. Has anyone else ran I to this issue. I've searched around and have not found any thing thanks