Many riders give up the ghost after a couple of laps and just settle for what they have,it just they make it look good.Explain how a rider can win a race then in his next outing can be the length of the straight behind when the race is won in the same time as his with no obvious reason.That’s speedway though,they are not going to thrash their engine if they are getting beat.You would expect them to be a bit closer on race time.