[Histonet] ribbon pro (fisher paraffin)

[Sue Barnes]

Is anyone using the ribbon pro from Fisher Scientific?
If so are you having any problems with it.
We are having problems with air pockets and chatter with it.  When using a control block embedded previously there is no problem so it doesn't appear to be the microtome, knife or water bath.  
I have had problems with the ribbon pro for a while now, seeing things that I have never seen before.  
Is there someone out there who can help?

Thanks
Sue