Power checks
We do fly Cat A every day and use 102% for take-off and landing.
We do a power check every 25 hours because the limitations section requires to do a power check every 50 hours.
The limitation section is the law.
The Cat B take-off also call for a power check??? which is a non sense since you are Cat B.
The idea is to follow the trend and the change is very gradual and slow.
If we get close to the limit, a compressor wash resolve the problem generally.
If you want do a daily power check, you are better to do it before the first flight, what is the point to do it at the end of the day.