Ignition Switch Trouble?

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My 02' 1500 carbed Nomad has an intermittent problem and I believe it's in the ignition switch. Sometimes it may be hard to crank and will almost run the battery down before I can get it started. Sometimes I can be riding on a smooth interstate at speed and it will just cut off and then it will come back on itself or I can wiggle the key and it will backfire then start running smooth again. It may not do it for 1000 miles then it will all of a sudden do it again. I was in traffic the other morning and it all of a sudden died. I pulled over turned the key off then back on and it worked fine the rest of the day. I've ruled out the main power switch and kickstand switch. The wife couldn't believe I knew it had a problem and we still went on a trip. LOL. I checked the OEM ignition key set and it's about $300. I may have to take it apart to see what's wrong or just replace it. It could be dangerous on the interstate if your in the left lane with heavy traffic and it quits. Has anyone had this trouble on a 1500?
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