Yes, I have!
It's when you are tied to the bench with 75 Remington 1100's and Browning A-5's the day before duck opener, because their owners are too short sighted to think about taking them out some time
before then to go over them, then the same fine sportsmen come back a month later, a couple days before deer opener wondering why their 742 or Model 100 doesn't fire, gee they just cleaned it about 10 years ago!?
These are the same swell guys who decide to take up muzzleloading, come in, pump you for information, (what gun to get, Pyrodex or FFG, etc.) then buy it at Wally World. Surprise, surpise, it didn't go off when 'Ol Mossyhorns was in the sights, and now either you are to blame, and/or they need it fired, cleaned and of course, fiber optic sights pronto!
Then, after each opener on Monday, It's "Gee, I don't understand why it didn't go off, I've been putting lots of WD-40 in it...." :banghead: Of course, now (Jan 20th) I could do all the extensive work some of these guns needed, but they will sit and quietly rust in their owners' closets until a couple days before
next season....
And as for the other side of the equation...I do my own work.
(usually after the fall rush...
)