Update:

The unit was missing some R507 for sure, after adding some and tuning it under load the capacity is around 170W @ -30C - just like I built it for 10-15 years ago....
The compressor spec (NL11F) is 140-170W @ -30C so thats it for this compressor / unit.

I think I'm going for a stronger unit, ~18cc (11cc current) going for 400W @ -40C ~

Cheers !