That Babbitt patch is freakin amazing! I have a nice Greg Monroe /25 but am leaning towards holding onto it at this stage. Also just acquired an Udoh in this set for my PC. All the Udoh's i've seen have been so-so 2 colour patches a la your Elliott Williams.
All the best with the set chase, and if it gets down to you only needing Monroe i'm sure we could work something out, but as I said, I'm not really looking to sell it just yet.