I have a Scheppach mitre saw and have been using it for a few years.
Recently I noticed it's began sticking (stop cutting) whilst cutting and I have to raise the blade and have several attempts to finish the cut. I am only cutting pine wood.

At first I thought the the blade sounded like it may be loose so I tried tightening it but no joy.

I have put in new brushes and yesterday tried new inner and outer flanges al to no avail.

Can anyone offer me any solutions please?