How was my explanation pathetic? I wasn't taking sides, I gave a possible justification for lens12 not immediately posting part numbers, and for you sounding snippy. I fail to see how that makes my post, and by inference, me, childish.
Having said that, he DID post filter numbers. What else are you wanting?
I understand being bothered if a person uses another's paid venue to advertise without paying their own dues. I don't know if that's the case with Sheaffer or not. I know he gives others advice based on extensive experience and is a useful source of information on tractors that can be tough to learn anything about. He may a horrible human being, or a great one. I don't know. He's been a member of this board over 11 years though, and has posted over 1300 times. Duration as a member and number of posts does not give one license to ignore rules, manners, or protocol, but it would seem to indicate that he's not doing anything way out of line: his second post here, over a decade ago, was advertising for something he can supply.
I would suggest calling another poster's contribution pathetic and unacceptable to an adult is more out of line than interspersing advice with an observation that he can sell you parts.