re: Panel saw blade screams

hi , we at work have a older blade that now screams. its fine to start with but then after a cut or two it developes a horid sound.
Speeking to the guy who collects our blunt tools to be professional re sharpend about this problem.

his response was it could be a few things.
1, a possable bent or dammaged tooth
2, if the fine expansion cuts within the blads are blockd with dirt/resin
3, any un used abour holes on the blade could cause the same horid noise.

Not sure if this is the case with your blade but thought i would share :)
Regards
Rob