No worries. Aluminum is a great material as well. Less expensive and easier to work with than SS.

Also, by focusing your heat just around the fuel pick-up and minimizing heating the whole tank - you can reduce the rate of polymerization even further. I recommend a heated sump design. Basically a small appendage on the bottom of your tank with just a couple holes to communicate with the tank. This will focus the heat in just a few pints of oil but will heat enough of the tank to melt Crisco if needed.