I remembered to apply Deoxit to my new batteries as soon as I unwrapped them.
Another thing I do is, when I change batteries, I always give a couple real quick fires with the door off, and look close for any arcing.
That's what I do too, i check maybe 2 times a day when changing battery, then clean and reapply that evening if i see arcing
Even with low ohm builds (.4) it generally lasts around one week (that's with a reo which sees around 20ml a day, so ymmv).
Also i use copper conductive grease (belleville) in place of noalox or deoxit. Never tried Deoxit, but i find it works better than noalox.
In any case what you really want is a thin film on the region where the contact is made. The surest way to have that seems to put a small dot and let the battery squash it. Putting too much can in fact cause arcing very fast, probably because you end up with a non plane surface.
Also the other day i was getting mad arcing and voltage drop
which i couldn't pinpoint, even after reapplying grease at the pos terminal and under the spring.
I finally remembered that the day before some sand had been in contact with the Reo and for a short time the button was all screetch screetch.
Some sand must have stayed inside, and the button probably didn't go all the way down. Anyway i cleaned the reo with water as per Rob recommendations, reapplied grease and all has been well since.
