few months ago i adjusted the valves on my truck and when i went to use the timing pin it wouldn't engage properly. as i rolled the engine around to where the hole should be it never dropped in i only felt a slight (very) bump. only thing i could figure is some knuckle head left it in before and cranked the engine#@$%!. does this sound like what happened and has anyone here delt with this? that thing looks like a SOB to get out then what about the broken piece (assuming it is)?