Not as much as I'd like, but....
I've been hidden away in the shed getting the engine up together.
I have a set of replacement connecting rods as the threads in one of the originals were a bit knackered! (appears its been apart before..)
376-030-71-20-40 Connecting Rod For OM352 HMMH
They are M12 bolts. The om352 manual specs 90Nm, does this sound about right?
They appear to be the same as 366 030 3520.
Thinking the part number 366 is for the om366 series engine (longer stroke?)The internet says step 1: 40-50 Nm then step 2: 90 degrees