I found this topic viewtopic.php?f=7&t=21076&hilit=contact+cleaning but it is not very clear on the procedure for cleaning the contacts. I have a P2V+. Do you clean the contacts within the batt compartment or the batts themselves or both? How do you do it? What is the exact procedure you use? (what chemical/cleaner, how do you apply/wipe it, how much product do you use, etc.) Thanks for any tips. I just don't want to skip any preventive maintenance. Especially in this area.