I have shrunk down the skin a lot more over the support but it leaves excess further down the skin as expected. I was having trouble getting this down any further with the shrinking disc. Something I have done for years, but possibly never shown, is I use tacks as a heat shrink. I don't have an oxy and this has more control than my propane torch. Like with the shrinking disc I don't use compressed air or a wet rag to shrink it while hot. The metal stays much more workable this way.
This is what the same spot looks like after only sanding the tacks and then, not before, hammering it down into a rubber dolly so as not to stretch the area. A bit more work with the shrinking disc around the surrounding area and it is nearly there.
Not far off now and think I will use the same tack technique here. Can see how much closer the centre is as well and hopefully some tacking will get it flush. It will stick out above the cowl edge if I don't get it down flush.
Rather than tacking with the mig like shown before, this time I thought I would try using the tig. I had the pedal adjusted to 50 amp max and mashed the pedal until it just got a gloss to it. Then moved to the next one. Worked even better as didn't have a tack to grind down afterwards. Once it had naturally cooled I hit it with a hammer directly over the heated spot into the flat palm of my hand. The panel actually looks worse straight after heating as it has gathered up metal from around it. So you hit the spots with a sweeping strike in different directions away from it.
The high spot over the support was also worked the same way and is now gone. The reason this bonnet needed so much shrinking over the whole panel is I actually need less crown than before due to the wider bonnet that rises to the same overall height as before, but over a longer distance. Thought I would add I little more high tech look under the bonnet as will have a modern engine. So going to use dimple die pressings. I tested the 3/4" size which was the largest I could fit inside the support, but didn't like the look. The 1" size shown was too big however.