I started to track my balance on my Umbrel node so I could see how much channel opening was costing and how much I was making from routing. I just barely started and there is already a discrepancy.
Last night I opened a channel with someone. I was able to set the fee to 1 since traffic was low, so it only cost 154 sats according to mempool. It was a triangle swap, and both other participants set fees to zero and I rebalanced the channels, which shows as having zero fees.
I went and recorded my balances this morning and I am down 814 sats. Where could the other 660 sats gone? I have not had any other activity besides this channel opening and rebalance.