Thanx Goodweed(is that pot?) I believe you're right about too much chocolate and reminding me that cornstarch makes it more dense is something I must dwell on. Chocolate is proving to be a noble challenge.
I made some adjustments and these are the results:
INGREDIENTS
7, 8oz cream cheese bars(same)
4, 1oz semisweet Bakers chocolate squares(3 less than first)
3/4cup, flour + 1/4cup cornstarch(1/4cup more flour and the first had no cornstarch)
3, eggs + 3 additional yolks(the first had 7 eggs un-separated)
2cups, sugar(same)
vanilla, splash
(Water pan on bottom of oven)
(Baked 30min @ 350 1hr 15min @ 275)
RESULTS
Growth, raised slightly during first 30mins, fell a little more than usual during cooling outside of the oven.
Cracks, severe, only on left half, right half was perfect
Center of cake, not as bready and light as I like, firm but creamy
Otherwise, not a disaster. Chocolate is so brutal.