Well there you go !! Good to see Rich is on the ball

Either they have dug deep into the back of the warehouse, or they have realised the error of their ways and have re tooled for new production runs of the mighty little 5RHO.
That's good news for GO fans.

Try and get a hold of a .2mm sleeve uplift shim (Rex - 22Racer on here) was putting them out back in the day. Increased the performance of the GXII-5RHO quite markedly by raising the ports a fraction.
We had some made up locally here and they worked a treat. Cheap and very effective power boost.