Here's how Seymour told me the story.
As a teenager, he was playing up and down the New Jersey shore. One of the bands he used to open for was Levon and the Hawks. Seymour admired Robbie and his Tele tone.
On one show at a club called Tony Mark's, Seymour loaned his Tele to this girl singer who was strumming it like an acoustic. Seymour always plays with light strings. The high-E caught on the pickup and broke one of the coils, causing him to play his set on the neck pickup -- which pissed him off.
He got some magnet wire from his uncle and set about trying to re-wind the pickup. Some of you may have heard the story about the converted record player that was his first winding machine.
Long story semi-short: when Seymour first put the pickup in his guitar, it sounded weak and thin compared to Robbie's.
Are you with me so far?
So Seymour took Robbie's guitar in his hands and looked at it. On Robbie's guitar, the bridge pickup looked fatter than the one he just wound. And he and Seymour were talking about why they sounded different. And Robbie said, "Mine has more windings."
So Seymour re-wound his bridge pickup -- this time with more windings. And lo and behold, he eventually nailed that hot Tele sound.
So, if Seymour's memory is more accurate than Robbie's, there's a small kernel of truth to the story, as Robbie has told it. But I'll go with Seymour's version. It makes a heck of a lot more sense.