Well to do it right,the deep vac is the way to go to get all the moisture out.

To bad I dont turn wrenches any more.Id say to bring it by on a Saturday and bring me lunch or some beer.

Theres a few guys here on TR who work at dealerships,maybe one of them could help you out.I still have friends who work at dealerships,I havent talked to them in a while though.

Another way to get around paying that 40. is to talk to a tech in the back.He might even do it for half.