My sister found me these two (I think fairly decent) pans at a flee market and they were covered with rust, but most of that easily came off with hot water and a good scrubbing with the fake steel wool dish scrubby thing. The large one on the left is my main concern. It appears to have 2 tiny pits in the middle left side, and I may have scrubbed too hard with the scrubby cause you can see scratch lines on the surface. :-( Other than the pits, the surface is totally smooth, with only a tiny bit more drag on the areas where I may have scrubbed too hard. Also the bottom of the large pan (pictured on teh left), definitely has more build up. But do I need to get this off? I'd like to get these pans cleaned up and seasoned correctly, but I just want serviceable skillets and don't want to go to a large amount of effort if it doesn't necessarily have to come off of the bottom. And lastly, there appears to be a slightly yellow-orangey haze around the inner sides of the skillets, especially the upper sides of the large skillet (again pictured left). I felt like I scrubbed the rust off really well, but is this rust nestled down in somehow and would the vinegar bath be suitable to try for this? Thanks for your help!! I'm very new to cast-iron and in spite of reading, I still wish I had a set of knowledgeable eyes looking over my shoulder telling me what the right thing to do is!