Here are the Part Numbers from Mcmaster-Carr
11735A7 Pegboard Jar, Fits 3/16" And 9/32" Dia Holes, 2-1/4" Diameter
5233K594 Masterkleer Pvc Tubing, 5/16" Id, 7/16" Od, 1/16" Wall Thickness
97763A176 Black-oxide Ss Button Head Socket Cap Screw, 8-32 Thread, 1/4" Length (you could countersink the holes in the bracket to use the stock screw if you wanted too)
I think the Hose and Screws are only sold in bulk but you can find similar stuff at Home Depots, Lowes, Ect. (their Hose might not be as flexible because they are thicker but should still work.
I'm sure you all know but McMaster has I lot of cool stuff too like the bearings/washers for the shell plate fix, I also found some cool micro switches that can be modified and attached to the finished round chute to be used on the homemade (pedometer) round counters but these work off of the finished round and not the levering of the press.
Also the reason I can't make any more right primer upgrades now is because I don't have any heat in my shop so I'm pretty much done for the winter. Maybe Dillon should do an upgrade (hint..hint)
-Steve