All:
Please provide me your input on the following:
I found a memo from "another" MB message site that listed a few cons withrespect to the 119 engine.

1:- "the B-2 piston is an issue on these cars." What does this mean ? What are symptoms of piston problems.

2:- Engine Rattle at startup... (I experience this with my 400E) The article states that two things can cause:
a: defectove oil filter housing check valve.
b: Canshaft oil tubes (possible bulletin concerning this issue)
..are these big deals ?? time and $$

Your expert opinions are appreciated !