Ways to rebalance a pool with 0 buy side (to get really really high rates):
Sell nbt to gateway, taking an immediate loss.
Sell nbt to the tube, play the spread.
Sell nbt to me at 0.2% off the price feed from your exchange account. This mode of liquidity is generally volume limited however.
In all cases, remember to set your buy side wall size to something small, like $10.