I've been running a Pro 2 Evo with a 142x12 for a month or so, but have just had a new rear wheel built so want to put this one back on my hardtail. I have swapped over the endcaps to the original qr ones(it's silver on the driveside, right???)and when putting the hardtail's cassette on (a SRAM PG90) I found the fit was very tight, and needed to be knocked on gently.
I tried to pull the cassette back off, but of course the freehub body came off with it, dislodging the endcap. I put it all back together and found that the freehub was now a bit stiff, so it all came apart and was cleaned up in case it was the grease causing issues. On the bike it fails to freewheel, causing a chain jamming effect. You can turn it by hand, but it feels too tight.
I've checked the exploded Hope Tech diagram and it's all in the right order, including spacers.
Can anyone shed any light?