Hi guys....I'm thinking about getting the ATX 200 set from APEK...However, I'm still worry about its custom half inch hose. Seem like I have to put the 1/2 inch adapter on the 1st stage in order to convert the 1/2 inch port into 3/8 inch port. My question is " will there be any affect on the gas-flow system from the 1st stage to 2nd stage after the 1/2 inch adapter on board?"=-)