RE: Starting Problems
Well it can be numerous things.
#1 I see that you didnt use a zip tie around the fuel nipple. With gas / targon you ALWAYS want to use a ziptie and / or barb on the fuel nipples for the tank / clunk. Targon expands over time with gas contact.
#2 A small hole in a line will cause the carb not to suck fuel
#3 Double check your choke is closing all the way
#4 Double check throttle servo ATVs to make sure you are opening and closing the throttle properly.
#5 Maybe you moved your needles by mistake? - Go back to "factory" settings and retune in teh engine in the plane.
The easiest thing to do is to close the choke, full throttle, ignition on, and flip till it pops. Then go back to idle, choke off, and should start in 3-5 flips.
Hope this helps...