Saw this one late. OP, do yourself a huge favor and check those IF cans before you put too much elbow grease into this one. With that much surface corrosion, I would be very concerned about moisture damage to those internal film micas. They sit at the can bases, right near that rusty chassis. Once wet stuff gets in and eats ‘em up, you either have to break down the cans and install new discrete micas, or source replacements. Neither one is a fun prospect. Lots o work on what is already a project case. And the earlier comment about frozen cores is legit as well. You can’t tune an IF stage if the transformer core is welded in with corrosion. A shiny waxed chassis is small consolation for a tuner that can’t be aligned.