"good things" is closed, so I'll post it here...
YEAH! I found my 4th coeff 6! A "Golden Pasty" (as far as I remember... Have to look it up again)
Good beginning of the game, with a Curly (the fourth one) at level 2 and the coeff 6 at level 11.[last], a number of nice big crystals (levels 0.3, 38 were the best one... Didn't manage to get level 57's one though)
But later I must have been less concentrated. Lost a lot of lives, regained my concentration somewhere in the late 60s and finally lost at 91. 4.3M points

And I had a lot of fun with umbrellas...
level 51: Accidentally ran into

--> no PD there
55: no umbrella
62:

64:
72:

or
So between levels 50 and 70+ nearly every level with a PD I wanted to use tried to hinder me using it (55 not, and I didn't want to go through Hell aka PD54. And 72.1 doesn't count^^)
I am happy now.