Cat 320cl weak left track

Cat 320cl with weak left track. Goes straight fine but left is slow when operated by itself. Put the switch in backup mode and track runs strong. Boom and stick are strong. Other issue is when tracking and work bucket, machine turns left, work stick machine turns right. Boom won’t raise while travel pedals are fully depressed but will if you slow travel speed some. What do I need to look at to fix track speed. Should also note tracks won’t go to hi speed.