I wouldn't expect new cans. I figured the fix would be new rivets and some sort of sealant/gasket inside the endcap. I think silicone will work great for the left side. I'll have to inspect the right a lot closer though, as I'm concerned about the rivets being loose around the outer diameter. Vibration would cause me some problems later on in that case.

Thanks for the replies, it sounds like this isn't an extremely rare issue(the search brought back about 5-6 relevant hits).