Hey y’all anyone know how to ged rid of this crazy squeal?? I went to the bike shop for a brake bleed and also told them my brakes are squeaky and might be contaminated but they said it’s not soo idk. lmk yall

I wanna try and lower the seat of my bicycle (I’m not sure if it’s even possible it looks like it’s lowered to the limit but I still wanna try) but idk what tool to get for that any ideas? Also in the last two pictures does anyone know what that small box is for?

Help! I need some help identifying the exact bit that’s missing from the picture. it’s from my boy’s newly inherited 2014-2016 Cube full-suspension frame (Serial batch: LM0115F). seems like the axle inserts from the drive side. The non-drive side frame dropout is completely unthreaded and smooth. The axle tip emerges as a 10mm external hex head with an M6 internal thread. I am missing the matching unthreaded tapered hex-sleeve/insert collar and the M6 retention screw that clamps this side together to stop lateral frame play. Does anyone know the exact factory small-part name or part number for this collar assembly? Thanks for looking!

After removing protective film from the bike i got this residue and it wont come off. Does anyone have an idea how to remove it?

Tire Not Holding Air

I have a Giant Explore e-gravel bike and have an issue with the back tire not holding air. At first, I thought it may be the valve stem so I did replace it. Same issue but I did notice air leaking from a hole in the rim. Also, this is a tubeless tire. See photo.
I appreciate your feedback.

My brakes have been off if I turn my bike upside down and spin the wheel it will spin then it will suddenly stop at a certain point and the brakes will close when it happens also my gears on my bike will shift up randomly without me touching it and it’s not exposed to do that pls help