I'll try a high preamp and low master setting, but I usually try to leave the master as high as I can to get good cleans, like on my Twin II with good flat bright speakers.

I saw the photos, and it's worth noting that the settings I use on my Fuchs ODS are completely different to what I use on my BM50:
On Fuchs low OD 1 (9 o'clock), noon for OD2, flat EQ, low presence. this is with the Fuchs 2x12 with very dark Eminence Red white and blues
on the BM50, trebly EQ, low bass, high presence, both OD on noon. BM50 is still darker (with a celestion Gold, more so with a Fane AXA12, dark as you like with any non-Alnico driver).
I would conclude that the Bludotone settings don't necessarily map across to the BM50. Nice to see the pictures though

tbh I am very happy with the BM50 other than the upside-down deep switch and the overkill PAB, so these are on the list for my tech to remedy.
I would like a little more brightness, but only half as much as the bright switch gives

Cheers
Tone

Interested topic!

@Tonecontrol: according to that pic, Carlton seems to have the bright switch down and mid boost and rock switch up where Schofield has the bright up and rock up, mid down. Try different treble bleed caps on your guitars, it really comes in very handy and you'll find yourself playing more with the volume and tone knob on the guitar to get different sounds. P.S. how can you have the master up so loud? Mine is at 4 but I lower the overall volume with a Fuchs Reverbrator (send and return at 25%). Yet the volume is still quite loud for playing at home.

@ topicstarter, hans: I have to say that after some months of constant dailing in different settings and being not happy I think I have now a setting which I quite like with both my Telecaster and Les Paul. I'm just slowly starting to know this amp... I've been dialing in less and less overdrive, too much seems to make the amp sound a bit blurry/mushy and I run the amp quite bright as well, which can be fairly useless when playing at your own but simply great with a band. Have a listen to Robben Ford's most recent sound, it can be really bright at times, especially with his Telecaster! The OTS doesn't show it's full potential when played at home, it's really a stage amp imho. Just like with Marshall's... though the Fuchs Verbrator 'master volume' feature does really do wonders to the sound at home. Without it's just too bright.