Hope you have a manual...read the bobbing method as it is the most accurate. Certainly don't want to confuse you anymore but in you situation might want to ground balance negative..In other words you will get a light sound when the coil comes up from the ground. Ground balancing is easy as pie , but seems to confuse many..in reallity feel a CZ can easily ground balance in most enviroments and usually set right on not negative or positive should suffice and feel your ability to ground balance is probably the reason you are having problems. Drop me an E-mail and perhaps I can answer a specific question as this has been discussed many times on the forum..