Well i have a gunsmith that is a friend so every once in a great while (once a year) i take my shotguns to him (at different times) and let him soak and clean them(includes trigger springs and all the stuff i'm afraid to touch in fear that i might break it). I pay him by how long it takes him and how long he has to put up with me being there. (hehe just joking about the last part). Normally for one gun its either $30 or $45 and if he replaces any parts i pay for those also.