ORIGINAL: aerowoof
to answer your question,yes,they do what they are designed to do.see if you can take a tour of the plant.
I actually just did that here last friday. They are some wonderful people over there at fox. EVERYTHING they make engine wise is all done by hand, no robots! I would recommend you go over to fox and take a look around. Thier engines are quite pricey, but now i see why. I have never run one, but I will be in the future. FOR THOSE OF YOU THAT LIVE NEAR HERE, FOX WILL GIVE YOU 50% OFF THE PRICE OF A NEW ENGINE WITH ANY TRADE IN, RUNNING OR NOT. HAPPY FLYING!!!!