Thanks for the reply, PRRHorseshoeCurve,
However, I want to try to keep the same matched original parts, where Jason may have the parts I need since he and Mike Calvert ran & operated Binns Road/Gilmaur that made these parts.
I own several PSC Diesel parts catalogs and they do not show what I need. Besides, many of the older PSC Brass parts casting molds were lost years ago when PSC experienced a building fire.
IMHO and based upon my past attempts, Des Plains is inconsistent on parts that are available which they may or may carry in their store.
My next choice would be P&D Hobbies (Pat Mucci), but he died last year and I am not yet sure if his son has has indexed all of the inventory or has all of the hobby contacts that Pat had. When I looked at P&D Hobbies O-Scale Detail Parts webpage, I cannot see pics of the parts they now offer and it seems the listing of parts available for sale has declined.
American Scale Models (Bill Davis) tends to sell Overland Brass products and parts, but I am unaware they have ever stocked brass Air Cylinders for GE 6-Wheel Trucks and none of the trpe I need appear on his website or eBay store.
Wiseman Models (Keith Wiseman) may be able to duplicate the Brass Air Cylinders, etc. by re-casting them in White Metal, but this would likely be an expensive option for the few parts I need.
Central Locomotive Works/Kemtron (Lou Houlemarde) may be my next contact if Jason is unable to help me with his remaining parts list...
Finally, I have a low-end 3D Printer, Thermolyne 2100 deg F furnace and a lot of 220 Brass where I am interested in making and casting my own parts. However I am still a Rookie in learning mode trying to figure out the best way to make sand molds with consistent yields of highly detailed brass parts with Sprues.
These are all reasons why I admire the work completed by Mike Calvert and I prefer to see what Jason has available for an exact parts match instead of my "trying to reinvent the wheel".
Regards, Steve