Crumar Musical Instruments User Group.

Me and a friend of mine, we are about to buy a used Crumar T1/C organ. 
The guy that owns it, said it is in fairly good condition but it has a 
slight tuning problem. It sometimes can't reach the perfect pitch.

I know that this synth has a knob that is used for tuning but I don't 
know how it works. The only resource I found on the internet about this 
synth was a website written in Italian (which I don't speak) with some 
photos and another site with samples from a VST emulation of the T1/C.

If anyone can help providing any kind of information about this 
instrument it would be very helpful. You know anything could be 
good...photos, manuals, sound samples, web links...anything!

We are going to go and test the instrument next Saturday afternoon at 
the owner's house and we'd like to be prepared...

Thanks in advance!
jonn