JimEC3 , man that much foam would float your whole car in a lake ! It must have taken a lot of work to grind/sand it all down to a level. I agree, less foam is better. I would also use a plastic filler or something that doesn't go on as haphazardly as the insulation foam.
What did you end up doing about the corners ? The side that faces the doors , right around the air vents , those corners are the hardest to get right. I couldn't get it properly.
I still haven't put it in back yet .... I am trying to source some cheap vacuum pods now that i have all of them visible. I have got hold of a few of them , just a couple of more to go.

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1987 190D 2.5 Non-Turbo , automatic
Currently fixing : diagnosing vacuum functions,
, fuel leak at injectors, Dash Re-covering , speaker replacement with aftermarket amp and new wiring, generic keyless entry system .

Future projects :, antenna , Transmission modulator pressure adjustment or replacement... more to come...

Fixed : Windows, Ground wiring cleaning, random transmission kick-downs.