I had to replace the exhaust on my jeep. I setup what i could on the welding table and i was able to weld everything perfectly fine. As soon as i got under the jeep and started trying to weld overhead/upside down my welde acted like a completely different machine. All it did was heat the wire and puddle to shit or stick to the metal or nozzle. It wouldnt arc at all. I cleaned all the metal made sure i had a good ground and tried different settings. My welder is a panasonic gunslinger. It has a freshly filled tank and the wire is lincoln .035. I also put a new tip diffuser and nozzle on it. Any idea what is wrong or what im doing wrong?. Scratching my head here. Im not new to welding but fhis has me stumped.