I should elaborate on this as I quickly typed it on my phone. After removing the shields on the bearing in question, I noticed hardly any grease inside. After soaking it in acetone, the bearing barely spun with a little bit of acetone still inside of it. After a few spins and the acetone gone/evaporated. The bearing hardly spun at all, unlike when I clean my spool bearings in acetone, those things will spin forever. Rolling the pinion bearing with my finger while it was on the tip of a pencil, it did not feel rough - but of course it did not spin freely like it should considering it has just been cleaned in acetone. I packed it with grease, put back on the shields and the reel is quiet. However, I believe this is just a temporary fix and that the bearing itself is damaged, I have yet to order a new one. I can update after some long time use with the reel as it is now if I remember to.
It is also worth noting that I have used my Curado 70(and all my reels) many times in the rain especially on the river, rising water gets the smallies feeding up, like the recent warm spring rain when my reel starting making noise.
@cddan I got your PM but I'll just reply here. To remove the shields from the bearing, use a pin or fish hook to pry the retainer clip from the groove in sits in under the outer edge of the bearing itself. You could probably find a nice video on youtube.
https://www.youtube.com/watch?v=AXmZhfvH9y0
Here's a video I found quickly searching, forward to the 1 minute mark.