no start, could ignition be the problem?

[slam59]

A few times when I went to start my 74 c10, turned key and nothing. I have had my key get stuck like 3 times where I could not get it out of the ignition. After turning the key left to right like 10-15 times it finally came out. So the few times that I turned the key and it did not turn over, I just thought maybe it got stuck before it went all the way to the right to start the truck so I just reacted by turning key off then turning back to the right and truck fired right up. Well this morning I turned the key like 15 times and absolutely nothing. I have a new battery and starter, and alternator is good. I turned on lights and they were their normal brightness and honked horn and was very loud as usual. Then turned key again and it fired right up like it usually does. My question is, I know there is no wiring in the ignition as far as the ignition itself goes on the cylinder. But could it be it is worn from years of turning the truck on? Maybe the teeth on it? And thats why its not turning over correctly? It does have alot of play in the cylinder and I have been meaning to get a new one, especially now. So you guys think that this would be the problem? Thanks in advance guys.