I ordered an RSM 4.5 ounce tank for my Smoothie ARF. Lovely job, and I prefer the way Eric does his uniflo vents.
Well, I got it fitted into the fuselage with a bit of expected grinding to match the tubes and allow the tank to go back into the fuselage above the wing. (the plane is usually supposed to have a 4-ounce tank, enough for the OT pattern, but not Classic).
At this point, I discovered that there is no room to install the hatch! I looked on the Brodak website, and sho' enuf, his tanks are 1.75" wide not the standard 2". DANG!!!
So much for flying this puppy this weekend, and the next weekend is the Knights' Joust contest. Gloom.