Looking for thoughts from Nottingham Analog table owners

The change to my NAS Mentor (early model replaced by Dais) from NAS arm to Trans-Fi air bearing arm was dramatic. My NAS Mentor experience was, and is, very good, and only beaten out by my DIY air bearing TT. I have nothing but good to say about Trans-Fi and their air bearing arm - I now have two of them, one for each TT.

Just looking for thoughts on my present setup.
Nottingham Spacedeck with what I assume is standard Spacearm. On that point I am not sure as it came with the tt which I purchased used of eBay.
Running a Shelter 501 mk3 cartridge through a Gold Note ph10 phono stage.
Now I am very happy with the sq but as you know...changes are always calling out...lol.
So what would anybody consider to be the weakest link here? The cartridge or the arm?
And suggestions for either or just leave well alone.
Btw I did research the air bearing arm and really do not want to get into that at all.
Thank you

I have a NAS Interspace Jr. with Ace Space 9 " arm and Audio Note IQ3 MM cart.  I've been told that Goldring builds these cartridges to Audio Note's specifications.

I am pretty sure there is not much wrong with my present setup but you know how the grass is always greener.....
But my recent upgrade to the phono stage did pay off big time imho so there could be more to have in the arm/cart area for sure.

So I have just seen a Nottingham Hyperspace deck for sale here and it says it has the Ace Anna carbon tonearm on it.
Looking at the close up pictures that tonearm looks absolutely identical to the tonearm on my Spacedeck.
Although I really do not see the difference visually between the Space arm and the Ace Anna arm just by pictures
What tonearm would have been standard on the Spacedeck or was there no such thing as a standard tonearm from Nottingham?
Very interested as would really like to know what tonearm I have.