I ordered the 16" flop tube instead of the original 17"... there are a couple of adaptors on the end that put it closer to 17.75", and I don't want it to hang up. I tend to be pretty conservative on fuel reserves, so I'm hoping that will work. Comes in on the 9th and hope to install/test fly on the 11th... Fingers crossed! I'll also try and keep an eye on the fuel pressure gauge.