Removeing the foam from around gas tank

[fishinest]

the foam gets wet by water intrusion from above or underneath and becomes waterlogged.foam cant hold back moisture forever before it breaks down and becomes spongelike and staying wet against your aluminum tank will corrode the aluminum.Not a pro just my 2 cents.
Ray

[lumberslinger178]

heres a couple pictures of my new tank,









the old tank out of the boat

[Monkey Butler]

Here s a good article on installing aluminum fuel tanks:

http://yachtsurvey.com/fueltank.htm

Looks like you had yours done right Lumber!