Posting to say I'm having the same issue here - I just need notes #44 and #45 and I've been doing nothing but spam Dal over and over for MONTHS.

I can't do the solo CEs at all - I gave up after weeks of failing them. First there's the spawning the Skimish chains you need, then completely the CE without being hit, THEN being picked for the solo CE and if you DO get picked, you gotta actually win, which is extremely hard to do. Then you have to do it all over again if you lose. And then there's the chance of not being picked for the solo CE at all, or you get hit by someone else in the CE so lose your chance at the solo CE.

I understand there needing to be a lower drop rate for these notes compared to the 100% rate in the Solos, but surely it shouldn't be THIS low? There really should be an update where we can use Clusters/Coins to buy the notes we are missing. Spending months just trying to get 1 or 2 notes is ridiculous. Because this isn't making it fun content at all.