Kevin,
I understand how frustrating it can be when no-one responds to your posts. Unfortunately, this happens to almost everyone who posts in any forum on any subject.
At the time of writing, your two posts have had 32 and 54 views. So quite a few people have read them less than eight hours after they were posted.
In the forum world, some participants choose a practice known as "bumping". This is where the original poster replies to his own post to make it rise to the top of the heap again.
We have no objection to an occasional bit of "bumping".
But a more effective way to gain attention is to create interesting content in the first place. This way, people get mentally involved with your project and want to help.
To make your post more interesting, include some photos of the project, tell the story of your machine and describe what you are trying to achieve.
If you have drawings or diagrams of the parts needed, scan or take a photo of those too, so people can see exactly what you need.
Ask for other ideas. Is it possible to make one? Has anyone done this? Does anyone know anyone who has done this kind of job?
Almost every forum sorts their posts into broad categories for an important reason.
If everything goes in the one pile, how do you find all the advertisements of parts for sale, or on special events, or books and manuals?
After a while, a forum with everything lumped in the one pile, just degenerates into an unnavigable, jumbled mess.
Returning to the subject of "bumping", posting an advert into an inappropriate forum in an endeavour to gain attention, is a little extreme.
Administrators have to act in the interest of all the members, not just the ones who seek the most attention.
Have a go at creating some interesting content. Your ads are being read, maybe they need to create more interest in order to produce a response.
Meanwhile, this topic belongs in the "Forum Issues" section and I'll be moving it there now.
Dave