Hard to say from that diagonal angle, doesn't look extreme either way. I vaguely get the impression your neck pickup might be adjusted a little high up in that ring - is it louder than the bridge pickup?
I do remember a lot of Corona seconds on Ebay that had finish problems ranging from premature checking to dramatic "broken mirror" crazing. Wasn't pretty.
Pots or caps seems unlikely. What string gauge do you have on the guitar? What do you plug it into? I'd say take it to a good tech for a good setup, shouldn't be all too hard to find in Germany.
I have a partscaster tele that has a 1990's Fender-made DeArmond 2000 in the neck position. I've criticised those pickups before on here for not being like the real deal 1950's/1960's DeArmond 2000's, but on a tele that's actually a plus. An old DeArmond is almost too big (deep) for a tele...
I don't recommend roller bridges on that kind of guitar. With that bridge setup and a Bigsby without a retainer bar, the rollers usually don't even roll, and make for an overly complicated bridge that's prone to rattles and buzzes. It doesn't help to keep the guitar in tune at all.
If you...