ATN,
I have NO time on your type but quite a bit on Turbomeca, specifically Ariel 1S1. On that engine, the power assurance is not a 'go no go' figure. Does the engine pass the ICP and 2 1/2 minute power check? Does your company perform "Total Performance Checks"? This check is done at Max Continuous OEI to measure climb performance against the RFM graphed performance, but I'm sure you've done that. I'm just curious as always.
Cheers,
OffshoreIgor