the clear 015 polys had a larger OD than the black ones so it was able to seal where the black would just cause the bolt to float around the keg. I wonder if the same is true for the 017's? if im getting a good seal with the black 017 polys on the valve, would the clear be too tight because of the OD? I guess the same could be argued for the 011's on the powertube. In either case, would I be able to go a size down ie 016 clear poly on the valve and 010 clear on the powertube and see a drop in pressure?
I could just be speculating like a mofo.. still something to consider.
DISCLAIMER: I am not, nor do I pretend to be a gun tech, smith, oring expert etc… I am simply posting my thoughts left for the experts to chime in. Please leave your flame throwers at the door