[MrForbes]

Thanks for the tip Jason, but I looked thru the 2006 KOP checklist and I do not see that transducer listed. I sure don't recall ever seeing it in my many diggings thru the pneumatic parts bin either. Maybe it is just something that was used the year before, and not in 2006, and got left in the manual? notice the page on your link shows that it's from 2005 and then relabeled 2006 at the very top