Before I swapped the clutch pack, my Uly would shift just fine when cold, but get stiff/notchy when hot.

It's not exhibited that behavior since I replaced the clutch pack.

Until I actually check the stack height of the clutch pack I pulled out, it's simply anecdotal evidence. YMMV and all that.

But do you really need another excuse to spend money on your bike? Upgrades, people! Upgrades!