Hi guys, I bought myself a nice little 125ltr tank from Wintecs yesterday. It fits perfectly in the boot of my wifes 4x4, the problem is that the outlet is on the side of the tank, and as the tank fits perfectly I can't use it... so I want to block it off, but I can't find anything that will block the hole flush with the side of the tank (it must be flush as there is no more than a millimetre either side) its a 25mm outlet, any ideas?