So I'm cleaning my AR-15 5.56 and I'm using the Otis Tactical kit. I spaced it and tried running the large patch through instead of the smaller patch. It went through no problem with no oil and with oil got stuck right at the opening of the barrel nearest to the carier. My options are go buy a cleaning rod and push it back, soak in oil and just pull harder, or maybe and only maybe take a BBQ lighter and burn the swab out. What are your thoughts?