Mines got the same mod flyrcjets mentions, one forward tank converted to smoke oil, it's not a lot so the smoke won't last long but mine's a Thunderbird scheme and a friend said it "HAD" to have smoke......lol

The other forward tank it fuel along with both rear tanks being fuel as mine's got a JetCat P-180RXi. High flow fuel line stuff isn't necessary until you get above 220N size Turbines, the 4mm stuff is just fine. In fact, they were running the 220 JetCats on 4mm line with no issues which is great as messing with that larger diameter line and how stiff it is, is a real pain in the butt to work with..