bleeding brakes

So I’ve had a Big wheel stomp z3-140 and after riding it in the track one day I noticed that my brakes were a bit squishy and wasn’t fully braking properly anyway I get home and realise that they aren’t working at all and there is no pressure when I press it so I thought it was brake fluid and...

Hey just wondering if bleeding the brakes and running some good fluid in them makes much of a difference? they work fine now but have the china fluid in them, just wondering if its worth while and makes a big difference?

This morning i changed my rear break fluid and now the rear brake piston will not clamp. It was working fine before i changed it and now it doesnt. Theres enough fluid in there and theres no kinks or leaks in the hose. I installed everything the same exact way as it was before i changed the...