micro adjust

This is a combo introduction/question. Hope that's OK! I'm getting back into woodworking after a lengthy absence. Not that I was very advanced before. I like having a workshop and tools so I can fix things and occasionally make something, but I have so many other interests, I don't get enough...

The fence on my Craftsman (aluminum top) table is very difficult to adjust fore and aft. It moves connected to “slots” in the table, very imprecise. It is a good fence otherwise. I suppose the problem is not one that I alone have. I spent a lot of time looking over the internet for some add-on...