Heh, wow. Thats 2 times in my entire life I have seen that. Basically, the screw is there so you can mount a dial to see what you are running at psi. Since its after the inline reg, and attatched to the valve chamber, its at the same pressure that the gun is at, and of course what is going into the LP reg. SO, the only thing I can think of is double reging what is going into the ram?
ya know what would be cool?
Having one LPR for each Ram input hole- so one LPR for pushing the block back, and one for the opposite. impossible... but it's a cool idea. wud need 2 seperate acuator rods.