I adjusted the wastgate one more time. It is now maxed out and I can only get up to 11.5 psi. I suppose the spring is weakened by age and I can shim it with a spacer to get more boost? Is it worth my while to go through the trouble get another 0.5 psi? Frankly, I do not feel any seat of the pants difference going from 9 to 11 psi. Maybe I need to adjust the ALDA better to get the correct balance between fuel and boost? How would I do that?

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked