I bought a bike with a kit in it. I need tips on realigning the back tire and taking the back foot break off. Also having Cgain tensi ok net issues it keeps sliding down, I can't get it tight enough it keeps spinning. Help please
Welcome to the forum. I would need to see a pic to help with the foot brake.
Use some thread lock fluid on the chain tensioner to keep the bolts tight. You can get it at walmart, a hardware store or home improvement store.