Ah - limitations!
They are complicated, and often not clearly explained. But you need to obey them, as they affect the airworthiness of the helicopter.
Transients are there only to keep you out of trouble. Using them on a regular basis is never a good idea - in fact in flight testing for certification, no credit can be given for transients.
Takeoff power is not always 100% - sometimes more, sometimes less. Whatever the number is, obey it.
And riff raff - I don't know any free turbine engine that has the power turbine ahead of the compressor turbine in the flow. The RR 250 series has the turbines arranged that way for reasons best known to the original Allison engineers - all long since retired.
And something for all to consider - if there is no equivalent engine indications of high power (such as N1 or TOT), is it really an over-torque? Remember that the torque meter is measuring drag on the blades, and a sharp increase in drag on the blades can cause a large change in torque - without the engine producing the equivalent power...
All the more reason to have a monitoring system like Intellistart if you don't have a FADEC / DEC.