Chicken hopper. Try uniflo setup first. Cap overflow vent, leaving uniflo open, either attached to muffler pressure or in comparatively undisturbed air, routing fuel line extension to uniflo so that opening is on inside of profile, opposite of cylinder. If there is weirdness in engine run. Runs rich then lean, back and forth, for instance, cap uniflo vent leave overflow vent open. Engine usually stabilizes. It will gradually lean up during flight. Profiles are prone to vibration weirdness. Our club runs lots of chicken hoppers.