VPi HW 19 jr upgrade

Mr SS- I'm at a loss as to what is meant by a, "one piece plinth". The HW19 plinth is the wooden bottom, to which the feet are attached, and they are all, "one piece". It's a simply thing to drill the Mk IV chassis for your tonearm, and, staying with your platter; no height problems will arise, as they do with the much heavier ones(yes- they offer improved sound, but at a higher price). The Mk III platter(that you have) should weigh in at right around 9 lbs. I found that by changing out the 10-24 blind nuts, in the bottom of the plinth, for 1/4-20's(http://www.fastener-express.com/blind-nuts-t-nuts.aspx), and installing four sorbothane feet(http://www.ebay.com/itm/SORBOTHANE-MOUNTABLE-RUBBER-SHOCK-ABSORBING-FOOT-/250592843589?pt=LH_DefaultDomain_0&hash=item3a587f5745), I was able to eliminate EVERY vestige of acoustic feedback, from my turntable, in my very cramped listening environment.

Rodman,

Sorry if I'm throwing around incorrect terminology. I was referring to the oak base on which the feet are attached as the base and the 1" MDF on the Jr which houses the arm, bearing and platter as the plinth, apparently erroneously...

Referring to 2 piece I meant that in terms of what I was calling the plinth and an armboard...those 2 pieces as opposed to a JR which has one piece to hold the arm and platter.
SS

Per a recent conversation with VPI: The was an, "early" Mk II, frosted acrylic platter, and the, "later" acrylic/lead Mk II & III platter which you own. Regarding the springs, vs the pucks: Some prefer one over the other. The low cost allows for much experimentation(except for the MK IV springs). The spring tension/design DOES VARY GREATLY, between the various iterations of platter, and their weights. Buying a used platter can be risky, as the spindles/bearings can be easily damaged(there are a lot of clutzes out there). The steel and acrylic BOTH comprise what is called the, "chassis" of the HW19, and the heavier/the better(by a wide margin). Of course- the acrylic armboard is a separate entity, on all but the Jr(no steel) & Mk IV. I own the SDS, and they do make a huge difference in sound quality, providing your house voltage is not a stable 60Hz(mine wasn't), or- if your speed is off, for any reason. Good luck finding one at a price used, that allows any room(within your budget) for further mods. You can buy one new, at MSS Hi-Fi, for $995.00. Isolating the motor from the plinth(as with the SAMA), will cost you very little, if you can DIY. Of course the Denon 103R is a nice cartridge, IF your phonostage will support a .25mV moving coil's output, as opposed to your present 4.5mV, and allow for proper MC loading.

Well thats two recommendations for SDS...
Thanks for all the help. I've certainly got a number of different thoughts. And I both the Mark2 and Mark 3 platter.
And yes, it weights 9 pounds.
ss

Rodman,The platter sits on the plinth.The feet are mounted to the base.