You might just want to buy some new ones? If you do tend to buy a scope just take one thing to mind. Outwardly, most scopes look more or less the same: they are metal tubes with lenses. The shooter looks through one end and sees out of the other. Because of this, scopes tend to fool the uninitiated into thinking that they are all the same, which could not be further from the truth. Additionally, the manufacturer is often culpable in labelling the scope as a unit that is “good for target shooting or hunting”, or some other ambiguous statement.