i feel for you. i almost purchased the deluxe quick shot but got the drop tine q.s. instead. the deluxe has a micro adjustable scale but, in my opinion, has less clearance for the vanes than the drop tine. that is why i stayed away from it. if you look at the two rests, the deluxe has the quick shot opening directly across from where the biscuit holding bracket is. i think this makes it tough to get good vane clearance while still having all three vanes go throught the bristles. most everyone i know, shoots with the cock vane up with an original biscuit or a droptine model. i doubt that you will be able to do this with a deluxe model. if you turn your knocks so that the cock vane points in, you should solve the clearance problem but will probably have one vane go through the quickshot opening. you may also have one vane go through the black bristles. this will introduce an imbalance to the arrow as it leaves the rest.
i believe the droptine is better because the bracket is located at the bottom of the biscuit. this is the same area where the black (more durable) bristles are. since these bristles are tougher, you should avoid having your vanes slide through them. with this rest, i shoot with the cock vane up and i get good vane clearance and, at the same time, all three vanes go through the brown bristles. the bottom two vanes miss both the black bristles and the mounting bracket and the cock vane goes through the bristles at the top of the biscuit, missing the q.s. opening.
i shoot 2" blazers with a 4 degree offset and arrow wraps. you said that you shot duravanes with no problems. i'm assuming that you shot 3 or 4 inch vanes. these are slimmer and have a lower profile than the blazers and that's probably why you had no trouble before.
if it were me, i would try turning the knocks to different angles and see if that helps. if not then i would purchase a droptine. i know that it will work for you with blazers.
i hope you don't think i'm coming down on you or picking on you but i think that carolina archery products dropped the ball on the deluxe wb. it seems like they changed it just enough to make it look different than the droptine and added a micro adjustable scale (etching) and raised the price about $15. i think that the droptine or even the original biscuit are better and that they could have put the micro adjust on them and delivered a much better product to the customer. as it is they put the "deluxe" tag on a rest that doesn't live up to the name. that is just my opinion. i hope the info above helps.