I've upgraded my new Gen 2 with the double-finger charging handle (among other things in the works), but I was wondering if there is any way beyond that to make charging smoother and easier (less muscle required to pull the charging handle)? I'm thinking a thorough cleaning and lubricating of the bolt assembly and chamber with a bit more lube than you might normally use. And am wondering if the spring, which came very dry, almost as though it had never been lubed. Would keeping it a bit more lubed than normal make charging any easier? Any other home fix ideas for smoother, easier charging?