I think I mentioned this in my long winded post, but that is not a straight swap... the regular / doser mini has 58mm burrs, the Mini Type A/B has 64mm burrs... the SJ of course is 64mm. It is possible to do the 58mm Mini, but it will take you more work than you probably want.
EDIT - oops, I see Roadie already mentioned this and posted a link.
Roadie - do you have a link or anything to back up the stalling ? I have been reading on this upgrade to the SJ burrs in a few places now, and have not seen anyone put that it actually stalled in writing... in fact, most everyone said they saw no performance degradation.
Of course, I could have missed it, there is a lot of info out there...
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