I'm not sure if there is something wrong with my bike or not

Ever since I went -1 up front....I feel like power drops at around 10K to redline.

I"m not sure if its b/c the -1 gearing up front which gives me more torque down low..which makes me feel like power drops toward the upper end...

or

my clutch is going.

I'm unsure how I will diagnose this problem and how to differentiate between these 2 options