I know of the general hot soapy water and using my standard Traditions solvent to clean my barrel. Is there anything I should NOT be putting down in there ever in regards to cleaning materials. i.e. there are a ton of cleaning products like foaming sprays and all that good stuff for rifles. should that or can that ever be used in a flintlock barrell? do you coat your inner barrell with anything? Ive been told a light coat of wd-40 on a patch would suffice.