Waho Kickr 2014 spares

Hi all

I've got a shagged optical sensor wheel on my 2014 Kickr and Waho have generously told me that they don't do spares for that model any more. Their solution was to offer me a reconditioned 2018 model for £850, which they reduced to £760 when I pointed out that 6 years life from a unit costing so much was bullsh1t.

Has anyone managed to source/make for themselves one of these wheels? It seems there's a market for them if Wahoo aren't going to support their own products. Otherwise I'm back to my old wheel-on trainer and saving up for a Wattbike....