Mark _australia said..
There is so much gear out there of varying dimensions that you will find it just fine. In Hawaii there’s going to be shops with broken paddles for parts …?
but. If this is a composite shaft, standard will be 24mm ID cos it all all comes from China in metric. At a guess it’s going to be 24x1x26
ally mayyyyy vary but I doubt it
but anyway there’s a ton of 24mm ones online that I can see
Thanks Mark. I found a carbon-fiber grip that should fit my inner-diameter shaft from a Chinese vendor. Conversion says 24mm is closest to 15/16"(23.8125mm). The grip I found is 23mm OD. Apparently I can't post links or images as a new forum member, but the grip is sold by a company called Z&J Sport, and called a DP-1. Not an exact match, but it looks like it will fit into my upper shaft.