Once the panel is fitting correctly, start to fill in the gaps between the tack welds with more tack welds
1. Keep moving around the panel to not create too much heat
2. There should be a tack weld every 15mm-19mm ( 5/8'' - ¾''
3. These areas can then be filled in with continuous weld if desired
4. Quickly blow compressed air on each area, then move to another cold area on the panel and repeat