The mounting distance is not 224mm. That is the pivot to spindle distance....the pivot and mounting hole are different distances from the spindle. Look at where the actual pivot is and you'll see that it's not over the mounting hole.
The spindle to mounting hole is ~220mm.
. . . thanks Jeff. I was just quoting the measurement from Vinyl Engine's tonearm db, and assumed it was right. I haven't had a chance to look closely at the arm geometry.
either way, the net is it's 2mm different than the Rega. Is that correct? Is that significant enough to be concerned about using a Rega armboard? Based on TLH's comments, it seems the standard Rega mount at least work satisfactorily. (I'm interested in this because I already have a Rega armboard - and it will be easier to try mine if I don't have to build a new armboard for it initially)