It's a '79 marlin. I bought a new steering wheel but I can't get the original one off. I've never dealt with tilt steering on a boat and to be honest, I didn't know there was such a thing, anyway. I got the center cap off to find a bolt head instead of a nut, it seems to me that it is a long through bolt because on the backside of the steering assembly, there is a lock nut and cotter pin that turns with the bolt head. My question is, is that what's holding the wheel and if so, will the new wheel even work? Sorry if this is a dumb question, I've just never seen a setup like this. I will take pictures or try to give any information needed.