Thanks for the compliments!

The servos in the tail are HS-605's. The (4) Wing servos are the Futaba 3004's that came with my 9C radio (finally found a good place for them!).

To install the rear servos, I cut out the holes to accomodate the servos. Then I cut (4) small pieces of ply, perhaps 1" x 3/8" wide. I mounted these to the inside surface of the fuselage, using thick CA and small adjustable slide clamps to secure it while the thick CA cured. This was to give the servo screws something to solidly bite into.

I only use ARF tanks occasionally, and only if they are of very high quality. Unless they go into a combat plane! Then I don't care.

With a YS, the tank gets pressurized to approx 6-9 psi. I know it doesn't sound like much, but that's a lot of square inches of area times 6 psi! I used a Hayes tank, probably their 16 oz. Otherwise I would have used the 13. The tank is wrapped with fiberglass strapping tape as a precaution. I make a little pull tab out of the tape before wrapping it around the tank. This makes it easier to pull the tank out from the rear in the event you need to check it or service it.

The Hayes tanks are very reliable in this application, and work fine with the 2-line system you would use with a YS. If you have not plumbed a YS before, you will use a T-fitting in the supply and pressure lines. It's a good idea to use a fuel filter between the engine and tank in both lines. The T-fitting on the supply and pressure sides works on a YS, because the fuel doesn't go past the regulator when you fuel or de-fuel the plane.