Anyone micro-adjust your zoom lens?

Got my lens back from canon and they were re-calibrated to factory spec.
Turns out my 10-22 needs +5 MA and 24-105 needs +12 MA. They were both front focus at wide end but perfect at long end !?.
Should I send my lens back to Canon with 7D and let them calibrated the lens to the body?

My 24-105 when I first got it was 0 on wide end, but +12 on the telephoto end. I sent to Canon and they calibrated it and has been flawless with no MA at all. My 70-200 is MA'd to like +5, which I calibrate at 200mm since it will have the smallest DOF in general, so small changes are more prevalent there. Seems to be good though on the wide end, so no issue there!

I would send to Canon if adjusting for one end throws the other end out... They can calibrate multiple points, versus just one in body.

When you MA yourself, you apply a correction factor that will be used for all the focal lengths of the lens.
When you send it in, as far as I was told, they micro-adjust it in 8 different positions. Not sure if it's true, but I'd send it in just in case.

I lens that is off that much from one end to the other might benefit from a factory adjustment.