I have the Wathers 130 table and it is a very nice piece.
The only thing is, it has code 83 rail on the bridge.
Walthers makes transsion rails, but I have been waiting two years for them and their still on back order.
You can use the code 100 rail joiners to effect a transition: slip the joiners onto the code 100 rail, the use pliers to flatten the protruding ends. Don't overdo the flattening, as it's difficult to undo.
Use a file to chamfer the bottom of the end of the code 83 rail (to accommodate the partially flattened area of the joiner just beyond the end of the code 100 rail) then set the code 83 rails atop the flattened joiners - you may have to do a bit more "flattening" of the joiners to get the railtops to align perfectly. You may also have to insert a shim under the ties to provide full support and keep the rails level. When everything lines up, solder the rail joiner to the code 100 rails, and the code 83 rails to the tops of the flattened joiners.
What about diamond sacle TTs, are they any good?
The Diamond Scale turntable kits make into a nice-looking turntable, but some kit-building experience is an asset if you wish to build one. I built one for my good friend cn nutbar, but found the precut pit to be out-of-round, along with other small defects.
(Picture courtesy of Mister Nutbar)
The indexing system works well, too.
Wayne