i have a mk85 that i bought in 1993. if i remember correctly, the video said not to clean the trigger assembly w/ soap and water--just to spray some oil(lightly) around/on it. i have not shot my mk85 since 2000. i have been using my disc rifle. but this year i added the conversion to the mk85. its also weighs a lot less than the disc rifle. i only shot it 3 times so far. i guess i need to re visit that video.