Not good enough IMO. I'd insist that it be repaired by Subaru technicians, especially since a new transmission will carry the 12mo/12K mile Subaru warranty. Plus you want Subaru to figure out what else is going on. Give them the ultimatum, take it to a Subaru dealer and provide the Subaru analysis and repair vouchers, or you want you money back. Period and end of story.
Pro dilectione Dei et patriam