I removed the oxygen sensor and could see the wastegate move. Next I think I will pull the heat shield and check measurements for the actuator rod, if I can find them.

 

Any updates?

 

I found my problem and stated the solution in a thread 2885 solved. The solution was the wastegate linkage going through the exhaust housing had developed a lot of play. I solved it by replacing the housing.

Czar had posted the correct actuator rod movement.