My guess is they know Test 4 will provide some important data,...

My guess is they know Test 4 will provide some important data, and will not take too long, so far more economical ( given costs of independent consultants) to wait. Plus, simultaneously they are now looking at a sizeable resource upgrade ( my bet) which is pretty near term. Plus product certification also will feed in very importantly to the PFS, and that cannot be far away. My bet is a bulk sample is being taken for that purpose from the current drilling.

So a PFS right now would be half baked. In a relatively short timeframe the data will all be there for a pristine PFS, and it would not surprise me if they move quickly to a DFS.