The easier way to adjust the ALDA without having to cut the cover is to shim it, under the alda where it attaches to the IP. Two shims ought to do it, according to the local Bosch rebuilder. They offered to give me the shims. I had them rebuild an IP and at my request they left off the cap, so the ALDA could be tweaked and then the cap put in place.
Either way, just a little adjustment makes a big difference in off line acceleration! Many an old diesel has taken on a new life after an ALDA tweak.
If I was so bad as to bust an ALDA I'd go to a Pick-U-Parts and snag one off a car, they usually have a diesel around for parts.
Oh yes, Majestic Turbo rebuilt my turbo - twice. It failed after it was installed due to the bearings developing end play. The car suddenly got real sluggish about 600 miles after installation. They fixed if but I had to pay for the cartridge, since it was almost a year later I accepted that because the car had been on blocks most of the time. The new one is still running fine. When you say Majestic Turbo you need to know there is also one in Dallas I believe its still in business. I only dealt with the Waco shop and they do a professional job.

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!