How to clean lens elements in Canon FD 50mm 1:1. 8 (new version)

In this video I will show how I try to clean the lens element s in my old Canon FD 50mm 1:1. 8 (new version), I use lighter fluid to cleaning the lens surface and it look s really good. There was also a very small area with fungus on the 3. lens group, so I try to clean it some Hydrogen Peroxid 3, and it work s perfect. But when I assemble the back lens group s I made a mistake because I put the 3. lens group in the wroooong way, well, I figure it out, and everything was correct again without any damage. Japan Hobby Tool rubber cone: 18 different size rubber repair tool s: