Any welders on the board?

Thanks for the tips guys :D
It could be the wire speed,the area is very clean i made sure of that.
It welded real nice along the top but underneath around the wheelwell they kept breaking or about the time it filled in the weld would get to hot and fall out.
The main problem was the door jam,i had 1/4 inch holes drilled in the new panel the weld would come out real nice and fill the hole but as soon as i put a little pressure oon it to see if it held they would just break!
Any tips on welding upside down along the bottom and around the wheelwell?