A lawyer will not help you lie to the court. Your best defense is to tell the judge and your probation officer that you messed up and ask for a second chance. Whether they do or not really depends on the reason you are on probation to begin with and if you have been trying to follow all the...
Is the chain well oiled and the links are not stuck together? Most times that is the problem. Check it out by just wiggling each link to make sure it's not sticking. But it could also be that the gear teeth are just worn out.