Hi Jason,
good to hear from you again, hope you got sorted with a longer thermocouple for your MW44 ?

The ngv is again a modified AMT item, the critical vane geometry is unchanged but whereas AMT bolt their shaft tube solidly to the ngv mine uses a TJT tube with a sliding interface and bearing carriers.

Turbine wheel is definately 65mm as you can see in the size comparison with the Wren 66mm wheel and the diffuser is only really modified to try and improve airflow to the front face of the combustion chamber due to a chamber/diffuser gap reduction.

Perhaps I should build a second engine with the parts I have to see if this first one was just a fluke

Rob.