[Histonet] sections cutting thick and thin

[Gerard Spoelstra]

Dear Histonetters, 
Recently our Leica 2135 microtome has been giving us problems. It had only just been serviced and started to cut thick and thin. We've isolated it to the knife holder, as we exchanged the knife holder from a more recent Leica microtome and it was fine. Has anyone with this model had the same problem?
Gerard Spoelstra
Medical Scientist
Murdoch University
Western Australia