Got lucky, got a referral to a non BMW shop (from the local BMW shop, no less).
4 new plugs plus 4 new coils = fixed k1200gt. Not cheap, but not having to find your way from rural northern France to your flight leaving Milan without your bike = priceless.
Now that I have fixed the cracked rear hub flange, enjoyed the failing brake servo motor, the sticky airbox valve, coil/plug failure, a squealing clutch, agricultural shifting, a new cam chain tensioner and a replacement seat, what else can go wrong?
Next big service will involve the final 2 recalls, for the fuel pump and the front brake lines. By then I will have 65,000 km on it and may want a new s1000xr anyways.