I'm to far away to do a face to face(unless he wants to come a couple hours north),but it sounds like he has a sealed beam version by the "motor turns slowly" comment.Sometimes those old motors wear out and don't go as fast.I used to have motors,belts,lamp holders,etc. for those but traded them a year or two ago.Might it be possible to get a photo from him of the bar in question or get him to the site?