Glad to hear you have solve the oil smoke problem
I have the same problem whit my 350 SL 1971 mod.
The oil trap , du you mont it inside the valve cover or outside, ?
Do you use a trap from Fiat or Alfa? Do you have a part number?
You can see a pictures in this forum I have taken of the problem.
Do you have a pictures of the trap you mont?
Arvid from Norway