I've seen several posts about the OEM leather covered bags on the 1300 pulling away from stitches. I'm sure this is caused from exposure to sun and rain. I recently purchased a 2010 1300 and the bags seem to be in perfect shape and I want to keep them that way. Other than keeping the bike garaged all the time, what is the best product to maintain the leather? Neatsfoot oil, Armorall, or something else?