I'm probably not understanding how this is supposed to work. But I have on an Ubuntu machine, a wallet with 1000 held for running a masternode, plus another 1000 that is not going to be denominated (but used for change)
On my windows machine, I have denominated funds, and I tried to send 13.54 drk to the Ubuntu address using 2 X 10 coin denominated coins. But I get the error " Unable to locate enough Darksend denominated funds for this transaction.
Back when I denominated these funds, a while ago... can't remember, I had it set for 8 rounds. It stopped around 6 rounds, and I never tried for more as there was a release. Now, I've re-set the rounds to 3. It may not like the change, or may not use higher denominated funds when you've set it lower? I don't know.
Also, I show 41 masternodes online, and yet, it's been over 15 minutes with no confirmation to anything I did send successfully (the faucet) It shows up but no confirmations.