G1 sputtering

[mcollins1]

My g1 is sputtering it seems like a fuel problem but I cant trace it, I'm new to golf carts and not much of a mechanic however pretty good with direction.
I have changed the spark plug, fuel fliter, and replaced the carb (referbed)
also have cleaned air filter followed all fuel lines looking for leaks and cracks.
it will run well for some reason when I am turning left and dies out almost completely on a right turn, it doesnt like to much weight, and if it's sputtering and i get off while keeping my foot on the gas it picks back up again.
I's it me or is this thing spooked?

Collins