3406B high egt.

Hey all, looking for advice on the next steps in keeping my egts under control. 8TC that's been converted to mechanical. Replaced cac and fixed two other boost leaks. Muffler was plugged, replaced with straight pipe. Turbo appears to be stock. Makes 30 psi at full tilt. Can't keep it there more than a few seconds. Very little smoke. Runs 800-850 on the level gets to 950-1000 quickly.

Bought the truck this way. Trying to get everything sorted

 

No exhaust leaks. Both turbo wheels look good no bent fins or sanding effect. Replaced air filter. Builds boost fast.

Checked pin timing. Pump was retarded about an 1/8th of a hole. I pinned both flywheel and pump and then slightly advanced approximately 1/4 hole on the flywheel.

Truck is building over 30 probably closer to 33-35 lbs of boost now. I have a good 10% grade close to the house 2.5 miles long. Was able to keep it to the floor this time. 7th over at 1700 rpm. The Pyro hit 950 as I crested the top.

I have a feeling I'm pushing the stock turbo out of its performance range? I'm going to turn the screws in a 2-3 turns and run it this week and see what I get.

I appreciate your help.