Q. Why am I getting distortion/tracking problems at the inner grooves?
Answer:
If the cartridge is mounted too far forward or backwards in the headshell of the arm then it will produce this exact phenomenon. Also if the cantilever is not aligned exactly tangential to the record groove it will cause this problem too. You will need a
protractor to get this right, by twisting the cartridge this way and that until it is aligned in the headshell correctly.