Nottingham Space Deck and Space Arm question?

Reviving and old thread I started some years back.  I seem to have gotten many things "right" with this deck but the tonearm thing still eludes me.  I have talked with Brian about the pivot screw and think I have this one adjusted properly.  My next challenge is that the cueing mechanism drops the arm far too rapidly, as though there is no damping at all.  

Question:  Is there an adjustment of some sort?  Is this drop controlled by friction and if so, is there a special type of lubricant (grease i.e.) that is used to slow the drop?  

Any help would be very much appreciated.  Not sure if Brian is still at the Analog Room but I will try there again as well.  If I remember right, it was not easy to contact him and he seemed rather busy.

Contact HWDSound (Hollywood sound) in Florida. They should be able to answer your questions. 

Thanks, Joe.....I have contacted HWDSound and spoken with Marc, who is a very pleasant person and quite helpful. As for the adjustment of the pivot set screw he did not really have a definitive answer although he seemed to agree with my method of leaving it loose enough for unrestricted movement but not so loose that the stability is lost. As for the cueing/lift mechanism, I ordered and received a new one and while better, the thing still drops too fast in my estimation. I am waiting on a call from Marc to discuss this further. Again, thanks for your advice.

Rob, sorry I did not answer your question:  the set screw I am talking about is not those to which you make reference.  It is the solitary screw at the very top/center of the tonearm itself at the pivot point.

Ok, good luck. I know that if I just lower it quickly on my The drop is a little hard but if I lower the queuing lever slowly then the contact isn't really severe at all. Same with lifting. I noticed the same thing with my clearaudio concept. 

My advice is to get in contact directly with Nottingham Analogue. I had some serious issues with my Spacedeck and Penny Jones from NA gave me all the support needed - including shipping me some parts. 
Amazing people at Nottingham Analogue, taking care of customers.