Anyone else finding that there may be a few gallons left at the bottom of the tank after using the siphon? I suspect this is probably the cost of having the convenience but want to see if others are encountering the same unusable fuel amount. Not sure how to get the siphon fed all the way over to the far right lowest corner of the tank (at least it appears to be the lowest point) or if there is even a way. I really like this tank - just would prefer not to leave unused fuel at the bottom to gum up and go bad over time. I'll be watching for the first drain plug mod which is bound to arise eventually. Thanks for any tips.