A good 5W out. However!! at initial key down the TX draws 1.0A with about 1 watt out, re key and its fine again. I found that there was 13 v on the drains at initial key down and after keying once that returned to 0v
It has the characteristics of RF floating on the board on intial key down removed by virtue of the next key down. A search for a missing direct Gnd around the PA, and a Multi Meter might not be the right unit to troubleshoot this, more visual. i.e PA gnd not local
The clue may go back to your original problem with your dummy load.
Geoff G4CAO 73