do it anyway. I've had new guns arrive gummed up with partially dried oil, a mix of oil and dust, rust from bluing chemicals that didn't get completely removed, or even rust on nominally stainless parts.
If you keep doing what you're doing (nothing) you'll keep getting what you're getting (misfires). Gotta break out of the pattern. It may not be the answer but it's something you can to do start.
