I have SS tanks with both SS and plastic tops.......... the plastic tops don't leak, the SS tops sometimes leak a little. the plastic top baffle finally came lose and I'm planning on gluing it to repair, but that was after 15 or so years of use, so I've got no complaints there, the SS tops will never wear out that's for sure. My big decision is what glue to use on plastic top. will probably opt for "Seals All" it's made to close leaks even in gas tanks.(posted 8680 days ago)my spare ss single reel 35 tank is a Nikor, price on it from 15 plus years ago was $4 used...........
best of luck,
JMJ