I have an extra ALDA lying around....so, while I wait for my 27mm wrench to arrive (24mm and channel locks doesn't work on my 602), I thought I would see how easy it is to turn the set screw....this is my "practice ALDA." It won't budge. I think I have the right size screwdriver....although one with a slightly wider head would be ideal.

Should I just put some PB Blaster and wait? I've read some horror stories about folks damaging the screw....anyone discover any tricks that free it up?

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 156k miles
06 E320 CDI "Rutherford", Black on Tan, 173k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 143k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 67k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

I guess I need to tear into that "tin can" that surrounds the screw and nut and loosen the nut....I don't see any way to access that nut without destroying the tin can.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 156k miles
06 E320 CDI "Rutherford", Black on Tan, 173k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 143k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 67k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Got all the tin can stuff removed....now I have a nice ALDA with easily adjustable set screw.

Maybe some folks have a thin 10mm socket to avoid destruction of tin can....

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 156k miles
06 E320 CDI "Rutherford", Black on Tan, 173k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 143k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 67k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

you might have to use a impact driver if kroil or pblaster soaking don't work.

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped