You will probably talk to Bob himself.
Call after 1:00 PM California time for best chances of talking to him unless there is a tourney happening that weekend, then he's usually gone by Tuesday or Wednesday of the week before.
Tell him what you want.
Be advised if you get the volulmizer, you will have to run the LP mod as the volumizer replaces the top regulator.
You can get the board, volumizer, new bolt from him.
The board goes for 150.00, volumizer 25 to 30 in nickel or black and bolt is 40.00.
As for the stock bolt, if you have an early one, it may break at the venturi cut - I've seen a couple of them to this - they do it more when you really start to step up the performance.
If you have a later one, the only problem is the wear where it interfaces with the body.
We have shot the crap out of ours and other than polishing the anodizing off to a nice shiney silver, there have been no problems.
The stock ones can get a little noisy with the tink, tink, tink metal on metal sound, but other than that, they are very accurate and consistent.
Master Tinkerer and Voider of Warrantys
Petty Paintball - www.pettypb.com
Deadbox before dishonor!
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