Hello. Got the following problem: So just wanted to disassemble the tire at the back but didn’t go. I could drag like I want the tire didn’t go down… That I’ve solved all 4 screws. (To prevent the stupid comments ) I think that the rim is rusted somehow with the drum brake. Or whatever… Alu doesn’t rust anyway. I see something white anyway. OK if that’s it wouldn’t be rust. Anyway, I can’t get the bike off. We Is there a hint for me?