thanks folks for setting me straight. i get the distinct impression i am not changing either pair until i run into the compressor, which i'm not particularly eager to do. i thought that at full droop most of the tension might be off, but clearly i haven't tried it!

charlie, i went and tried to keep the word "W123" out of my signature, probably a bad idea....

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'77 240D, 504H, OM617.952, etc.