Escuan, I am in your position too. I presume you mean 6ac and 15ac and 7dn, which I also have. I presume the patriot in 4dn has the first name Paul (and had a band called the Raiders) but I cannot see which letter to remove. The same goes for 1dn where I think the "support" is a tee.
I assume the answer to 1ac is the kind of informers you find at a racecourse and that the letter to be removed is "t", but that doesn't help terrifically. In fact I think the first eight letters to be removed are in the preceding clause but that's not helping much either.