So jealous.....
Another former 1A owner - it was my first bass so I wasn't aware that it was supposedly heavy. What I did know though was how much better it was than the badly produced Fenders available in the early 80s.
I've been looking for a 11a or 111a with a broken headstock which could be converted to a headless - the only thing I didn't like about basses of this era was the oversized headstocks.
Hope you enjoy your new bass.