
MTB drive train issues
I bought a used bike from a retailer on eBay. The bike is in the general condition for what I expected but the drivetrain is not running smooth.
Before I go back to the retailer, I'd like some opinions/advice so I don't just get fobbed off.
Firstly, is this chain too long in highest gear?
https://photos.app.goo.gl/RCzoBnzhcdakwaYr6
Secondly, in lowest gear what seems to be the issue here - is this a hi/lo adjustment issue or possibly a cable tension issue?