Heinz - AS adjusts the lead time depending on server/network speeds - they can be particularly slow on Sundays, hence AS's adjustment.
No need to set your snipe to 2 seconds (I use 8) as it's not the last bid that wins, it's the highest. As long as you snipe in the last 30 seconds or so, no-one has time to react to your bid. Setting it to 2 seconds risks the snipe not being placed at all!
R2