I received the new lower front panel (which I specially requested without the cut out for the nose and longer at the ends so I can fold it over like the original.) Rather than butt weld this panel I joggled a small lip on the repair panel to sit inside the original one. I ground a ton of filler off the front panel so I could ensure the repair panel was straight, although a bit tricky around the nose; using some fabricating magnets and clamps the panel fitted OK.
Eager to get the panel on I started tacking it together, then double checking the fit before I went welding crazy I noticed that the joggle at the left corner end of the panel was overlapping to much, and causing the curve of the panels not to sit flush. Access to the back of this panel is very awkward because of the front light bowl and inner kick panel, this ruled out any fabrication from the back. So I painstakingly cut the joggle off from the front with a cut down junior hacksaw clamped in a pair of pliers. This did the job of letting the pannels sit flush, and then with the magnets in place I continued to tack it all together.
Learning from my cock up with warping the dog leg panel I spaced out the weld points and spot welded the a seam between the two panels with only a second spent on each weld, but still the original part of the panel had a slight ripple along its curve. Not sure if I’m being to particular about my work or still have a lot to learn but I'm determined to get it right. So I guess Ill rely on the paint prep to get rid of any imperfections (filler).