Welding Tips and Tricks

I have an xray/bend coming up for a schedule 40 6g dc aluminum no backing purged with ultra high pure helium pipe test. My vertical to flat looks perfect as far as the root pass goes but my overhead to vertical looks to be concave and not convex like I would assume i want it. Any help on this problem would be greatly appreciated. I can do the test with either gap or no gap between pieces. So far I've been trying no gap.

Try backing down on the heat a little and slow down. On my first try's I was told I was over compensating for the position with heat and speed. Truth be told I was in panic mode. It was hard but I managed to relax and just let it flow and my welds began to improve.