Yamaha PF-1000 vs Systemdek IIX ?

I had a Systemdek for years. It sounded nice but was susceptible to vibration. As an experiment I locked it down removing its floating suspension and it sounded much better. I changed the motor and it got better, I dampened the plinth underneath, changed the arm, changed rubber feet for spikes and it now was very good.

It was also no longer what the original concept was.

I eventually tired of it's home made look from the tweaks and went to a more modern table.

The best info I have is from
http://www.thevintageknob.org/YAMAHA/PF1000/PF1000.html#
which says it is a medium mass tonearm with 10mg friction (verse say 20mg for Systemdek Profile arm).

I am not sure how you would add mass. I had a Discwasher DiscTracker on the AC-2, adding +0.6g VTF and forcing counterweight halfway off to balance, but not much difference in sound.

The headshells are hard to find. One went on eBay for $5.00 not long ago (cannot believe I missed that). I finally spent 79 Euro to get one:
http://www.audioscope.net/yamaha-headshell-12-inch-p-1352.html?language=en
has grounded shield that I have not seen in brochures or manuals (which are available at Vinyl Engine). If you find a better source, please let me know.

Headshells: Most Yamaha P-* turntable headshells would fit (P-200, P-300, P-700). You can buy a used turntable plus ship for $40-60 for the headshell.

Thank you for all the help.
I will let you know if I stumble on a good source for the headshells .
Thanks