hey there all! i have some questions about the regulator/solenoid/needle valve/ whatever else i missed. how do all these parts connect and where can i find the connections? i'm building a pressurized co2 system for the first time and need some guidance. i have just purchased a dual stage harris 8700 regulator on ebay for like 23 bucks. heres the link eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices where do i go from here???