Stalling issues after swapping to a new pressure plate

I just switched my pressure plate from stock to an aftermarket Rizoma plate. The bike is a 2005 999, all stock. During the swap from stock to the 6 pt Rizoma star pressure plate, I also treated my clutch plates with white lithium grease to address the grabby clutch I had issues with. During the reinstall of the clutch discs, I switched the last two steel discs, closest to the engine, with each other because the one originally closest to the engine had some roughness to it. Other than that, I reinstalled in the same order they were taken out.

The pressure plate came with a bearing in place, but I did have to remove the clutch pushrod sleeve(?). It did not go in easily at first, so I put it in the freezer for a while. It still did not drop in place, so I drifted it into the bearing with gentle tapping. I did notice that the bearing did not rotate as freely as the stock one. There was a large difference between stock pressure plate bearing and the Rizoma. Is there a way to improve it?

I had also ordered the EVR stainless springs to go along with the pressure plate, but ended up reusing the stock springs due to the large difference in spring height between the EVR and stock. The pressure plate kit had a total of 12 spacers, each about 2-3 mm in thickness, that go below the cap and between the post. I used both spacers to try to achieve what appeared to be the same height, or preload, as stock. It seems to have about the same clutch pull as before.

Sorry about the long back ground, but I felt it was necessary to help diagnose why this bike is stalling now, in neutral. I've yet to take it on the street, just have it straight upright in the condor. Before working on it, the bike started normally. After working on it, it is having a hard time staying running. It wouldn't stay running unless giving it some throttle upon initial startup. So I got it running, and slowly backed off the "choke" until it was at normal idle speed. I let it idle for about 20 seconds, and then grabbed and held the clutch in for about 15 seconds, listening to the open clutch, and it just died. Any ideas???

Any help will be greatly appreciated!