8a. Run well within a corporation, there's high growth (9)
Is it ACERVATIM ?
R VAT could be run well, but I can't parse the ACEIM
I hope it isn't as I cannot get 9d with the stem letter E from Acervatim
9a. serious setback, as line by party taken the wrong way when in front (4,4)
E?D? ??O?