So I recently have been looking at getting film for my Yashica Mat 124G but have been going through testing things out and wanted to check the battery compartment. I noticed it was very hard to open and started to worry that there might be a battery in it. Apparently at some point my dad did use it and left the battery in and it exploded pretty good. I'm in the process now of taking it out but I don't know what to clean the corrosion with and I'm worried that the prolonged leaking may have damaged other things. Has anyone had an experience like this with a similar camera? Can a leaking battery cause other damages? Should I take somewhere to have it at least looked at or just try to use it and see what happens? Any help is appreciated.