I was actually cleaning the set while taking the photos, but even before I started it was very, very clean.
I hadn't noticed the Present/Precent -typo!
Is front-end valve the one in the photos, the ECC85? That sounds familiar, I might even had some (some years ago I got a small lot of valves, most look like NOS, will check again). I am not sure if it's lacking in sensitivity, I can tune into a lot of channels, this place doesn't seem to have too good reception with any radio anyway, and the only channels that I can't receive properly are the ones I'd like to listen to! I'll see if I can get another frontend valve and see if it makes any difference. The old one with B&O-logo will make a nice piece of decoration!
Main problem now is the little crackle/static in the left channel. Marin, per your PM, I cleaned the valve pins (the ones I could reach without taking the chassis out) but it didn't help to this. It's present in all sources but easily lost into music but pretty annoying when using line-in. It's not controllable using volume pot (on min. it does mute completely, though).
Bang & Olufsen - The art of controlling sound, picture and light