Rear Wheel Not spinning when QR is locked down

[brianlucas]

I have a Roval CL 50 wheelset that I changed over from an XD freewheel to Shimano and from a through axle to a quick release axle. I had to change the freewheel and the endcaps along with skewers. After changing out the parts, everything seems be be fine until I tighten up the quick release on the back wheel. As soon as I clamp the wheel down, the free hub does not spin freely. The wheel itself will spin nicely, but when I turn the pedals, there is a ton of drag on the crank and the crank will not spin backwards. When I try and turn the crank backwards, the freewheel doesn't spin easily and the chain bunches up. When the QR is loose it spins, but clamping down the QR is compressing something and keeping the freewheel from spinning freely. Any idea what is wrong??