UGO: I am too lazy to send a pick of my YS 63 stuffed in a UCD 40. Had some trouble with fuel feed due to the tank location, even with a pumper. Soooo, mounted a tetra 14oz tank in the clear canopy. Works wo well, several of the guys have copied the installation and lovt it. Why, if you want to know how much fuel you have left, just do a close fly by or hover and you can see how much is left in the tank. Necissity is the mother of invention? ENJOY