Welcome back Rex

The GXII Plus looks to be a strong little motor for sure.
We have had limited running with them down here, but overall they seem to have a very similar linear power band like the 5RHO, but with somewhat extended top end.
Much like the 5RHO with the .2mm shim installed under the sleeve (something you put me onto a while back).

Look forward to hearing your thoughts on the new motor. I'm sure you will be a valuable asset for Richard in his efforts to put GO back on the map in the US.