gettin back into RC

Hey guys, I recently cleaned out my garage and pulled out my old traxxas t-maxx 2.5. I haven't touched it in YEARS!!!!

I tried starting it up, it either won't start or takes a long time for it too start.
Once it does start it runs for maybe 1 minute max before it stalls out and I have to go through the process of trying to start it again and has a problem starting even when the engine is warm.

I have tried adjusting the high and low speed needle valves to try and make it start easier and run longer without stalling.

The Nitro fuel I am using is maybe 2 years old :S and 10%
Would that be the problem or could it be?

Is there anything else I should check to make sure its running top notch again?