Can I drill a hole in the top of a Cool Power fuel jug? It has the special top that you have to push down to open. Im not sure if that will make a difference. I have [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXJ811&P=ML]this fitting set[/link], so im making sure if I drill a hole to install it, it wont cause any problems like sealing the jug.