Ignition Switch locked on

[p_rubottom]

I recently bought this 85 crew cab. Tonight i went to turn the truck off and the ignition will not turn back to shut the truck off. I did some wiggling and such but could not get it to turn back. I put a rag over the carb to kill it and unplugged the battery to turn the key forward in the start position and it will move that way. So far after doing a quick search on the forum I couldnt find any info no a cylinder being stuck on. I've taken the steering wheel off to find the awesome snap ring, I'll need a compression tool to go further. But I found a linkage rod going down the column to a switch under the cluster from the ignition cylinder, could the switch be stopping the rod from returning to the off position? Also, I can pull the key out while its in the on position. I tried the spare key that wasnt worn out but still had no luck. Anyone have some ideas or expirience on this problem?