Need advice on maintenance/cleaning my Bisley .44. Not the typical post range scrub, buff n loob, but a good strip and clean. My Bisley is about 25 years old and has been hunted with in the field every year plus carried on woods walks and camping trips regularly. It gets used. I've never disassembled and cleaned it. I estimate about 5000 rounds fired in total? It still works fine, but I think it's time. So how far do I go with the disassembly? I'm comfortable with removing the grip frame but that's as far as I've ever gone. I'm thinking about just spraying it out with solvent and oiling it up from there and putting it back together. Is that good enough or should I drive pins and remove the hammer/trigger assy also? What say the collective? I'm a pretty handy guy but may lack any special tools needed.