I've used the deoxit contact cleaner quite a bit really great stuff. They also make a "sealant" type thin lubricant in an aerosol can mainly for potentiometers and such (I.e. The dials on your amps and old receivers) to keep out corrosion on more sensitive electronics. One of there most interesting products is the conductive dielectric grease.... Yes conductive grease that has microscopic pieces of copper in it. I use it quite a bit at work and it really helps clean up irregular electric signals. That's all I got. Not sure if deoxit contact cleaner will make a huge difference over the stuff you use on a v11 but for more critical connections it's the stuff!
@ foto, is that what you traded your v11 for? You're younger than I would've imagined.