Will do bob,
Don't know what it is yet, might be a twisted or crimped vacuum line. The factory switch works so its not the Jake itself. I never realized what a pita the factory switch was till I got the shifter. I would'nt go back for anything. Once I had your shifter hooked up I never used the factory one till this problem started.
Oh by the way great kit easy to install.
I want to make perfectly clear that these posts in no way constitute criticism, I have had the shifter installed for over a year with no problems.