Hi,
so spare part arrived. In the meantime my fingers are 2mm shorther I guess due to drumming and spinning fingers all the time.
First thing I did was going back to my notes to check what I wrote down when swiching to the orange PLA one month back in order to underestand how the new filament performed during tests then and how I came up with the 225C.
Turned out... guess what... the profiles in Simplify3D didn't have the values which I figured would be best
The 225C worked great with the black filament before, however the orange one seems not to like it as hot as the black one.
Went down to 200C and detached the custom duct (my current view on ducts is right now: They don't really add a lot value

)
==> Smooth first layer, however it came off quite easily.
I ran a test cube.
Everything between 200C and 215C gives good bonding, smooth surfaces and sharp edges.
Because of the bad adhesion though I increased the bed to 75 (1-3), 70 (3-6), 65 (6+) and the extruder to 215C (1-3), 200 (3+) (@60mm/s).
So far everything looks good.
I guess the pattern was misleading to me, otherwise I might have checked the temp first

Tought me a lesson though

"Document settings and what you do. And even better... read it!"
May I ask what print speeds you are prining on?
Thank you very much for your support
Michael