The orange fuel in the carb probably smells rank since it indicated bad fuel. Especially if using ethanol blended fuel. The bubbles could have been water and not air in the fuel. Due to ethanol being water based which with the corn ferments into alchahol. When the ethanol breaks down you get water. Change your fuel out with fresh fuel. Remember ethanol blended fuel starts to break down after 2-3 weeks unless completely protected from ambien and has not been sitting stagnent.
WWW.pure-gas.org will show stations that carry pure fuel with no ethanol. The temp is not the problem since I have driven mine in 100+ temps the past couple weeks. The only thing I noticed is that when tank was full fuel seeped from vent tube due to the higher pressures in tank. Ethanol expands greater then gas so if using ethanol based fuel expantion pressure will be greater.