Bought a Dyson DC07 Precision the other day - I used the original YV-2200 out of it in the DC33 im going to sell, then put my Quаltex mtr-299 in the precision.
Funny- it had an offset mount, it sits on the motor offset too, but fits perfectly in the grooves etc. I swapped the top mount over betweent the two motors. should of seen if the level one would of fittted, I'm guessing its to do with a different type of housing mabey? puts more tension on the belt though which I suppose is good, I do prefer the precision over my custom turqoise/yellow origin.