So I've been browsing around on ans gear and noticed that rather large amounts of greases and oils now available for paintball markers. So my big question is this. What do you think is best, oil or grease? I was thinking of picking up some of the grease for the regulator springs in the back but was curious if some of that same grease might be good for other places, like where the bolt moves. Or should I just stick to an oil? If so, what do you find is the best?