I have a further comment or question if somebody could help me out. My stock intake boot is looking a little cracked although I don't think it's actually leaking air. With my smartcarb the motion Pro Reed spacer block can no longer be used as the carburetor runs into the frame. Given those parameters I was thinking a boysend rad valve might be the right move. Does anybody know the part number for the rad valve we use? Well searching for one I've come across several different part numbers. Some look like they have thicker spacers on them than others. Any clarification or help on this would be great. I also have a male at work and might be able to shrink down the motion Pro spacer enough that I can still use it. If the rad valve doesn't already come with a spacer installed