Your actuator is standard.

From what you have said about adjusting the bleed valve i would be looking at the exhaust housing on the turbo, they are very prone to crack on the escort T3, and obviously a cracked wastegate means there isn't a total seal.

I had a cracked one and it was only hairline, and lets put it this way - I REMOVED the screw from the bleed valve, and it still would only peak to 10psi and hold 6psi