The right main fuel tank is done and pressure tested, the right auxiliary tank i finished and pressure tested yesterday and bolted it onto the right wing spar today. So far, fingers crossed, I have not had to fix any leaks on the tanks. The vent line on the auxiliary tank was leaking but the flare from the factory was not good so I touched it up with my flare tool and it is now sealed. The biggest surprise I have had so far is that, last week me Tech counselor swung by and advised me to plug all of my tubing and holes to the tanks. This week I found where a mud dobber completely plugged the fuel feed line for the aux tank. Luckily I noticed it and was able to take it out and clean it up. My left main tank is also complete but I am letting the sealant cure for another day before I pressure test it. I have been using a piece of tubing as a manometer to build pressure and test for leaks. Interestingly the fuel level sender on the left tank matches exactly what the manual says it should be. I build it the same way as the right wing but I did not get the same results with the right. I contacted technical support and was told that it should work anyway as the delta between empty and full is plenty. Lastly I am still not able to finish my left aux tank as I am waiting for two more pieces of fuel tubings/fittings to install before I can close it up. One of the pieces is internal to the tank and I just cant do anymore with it. Unfortunately that also means I cant install the top skin, main tank or wing tip because of that. This coming week I will install the top skin on the right tank and hopefully install the wing tip. But to do the wing tip I will have to take the wing off the factory jigs so I will have to make something to store the wings.