He's back on ebay with these for £35 buy it now + £9.99 P&P. 7 available at the time of posting this.

I've got one and several others on here and I can recommend it.

does it fit on your Stuart taylor ok, or does it need modifying?

Do these fit a velocity scuttle?

Linky to the trhead where I describe fitting it to the ST. In short, I didn't modify the screen at all, but it does end up leaving a small gap where it goes over the ledge on the ST scuttle. I filled the gap with some rubber trim and silicone, and it is hardly noticeable unless you look at it from close up below the screen.

Re Velocity: I think it should fit most scuttles, as it is fairly flexible. If the Veocity scuttle has a ledge/step you will have the same issue I did - just depends if you can live with it.

Cheers

Simon