Acquired my first piece.  Got a 'used' 1400 XL off ebay.  Not too used as the photo will show...if I get it on here.
Okay, it has the 4 valve version.  What is the difference, and what does the 4th valve do?
I cannot tell if there is a slip ring or not.  Should I be careful about that?
Where is the radio setting for the pump?  The previous owner said he messed with it and I have no clue what motor rpm/pressure I have.  Everything seems to work, so I guess I did okay.  Not a Vario but I just don't have that kind of funds for play.  
Have not tried to dig yet, but did pinch the heeck out of the wife's leg.

 I got in hot doo do.
Oh ya, these need provisions to grease them up easier, needs to be disassembled to do this before any real use.