Oil leaks

Hello V8 pros!

Since April I have been the proud owner of a 1991 3.6-litre. The vehicle is in good condition, only the engine loses oil.
In the workshop of my trust (this is a small, former VAG workshop), which also perfectly waits for my classic car (Audi 100 GL from 1973), I showed it. Several leaks were found (unfortunately). The crankshaft-simmering has been renewed, the ignition distributors have been resealed, oil cooler, oil filter and tap sensor housings have also been renewed, and the oil tank seals have also been renewed.
But...
He's still incontinent. I have (not much) oil drops in the garage, and after the ride you can smell that oil drips and evaporates somewhere on a hot part (maybe aspuff?).
Who can give me a competent but inexpensive V8 workshop, which is not exactly at the other end of the Republic? I live in Mönchengladbach. Does anyone know a shop or even have one? I'd be very happy if you could help me and if my V8 would be "quick" at some point.
And by the way: the infrared remote control would also have to be repaired, it doesn't, and neither does the memory function of the driver's seat (but is rather minor).
I look forward to your answers,

Greetings,
Jürgen