Mike
After sorting the needles and taking care on the rebuild it was reading just over 12lbs taken while in a model on a paved area. The scales were digital, considering the turbine the second time was shunting the model with 1/2 gal fuel and gear on board it was an OK result, though not to GTBA standards. Can you confirm the outer dia of your compressor (at the inlet) is a nominal 43mm with 12 blades i.e the latest version for the JJ1400.

Paul