OK, so you've ordered an engine from an outfit that has a great reputation for taking care of it's customers. I think they have a 2 year warranty on the engines they sell as well.
Hobbyking on the other hand, has a terrible reputation regarding customer support, and will very often request you send the engine back to CHINA for service work!
If this is your first gasser, there's a good chance you're going to need a hand. Many times you can get that from a forum like this one, but having the "Ace in the hole" is/should be quite a comfort.