How can I adjust the tone arm so it does not miss the edge of the record?

[dac10012]

I recently purchased a vintage Garrard 440M record changer turntable. I want to play stacks of 33 1/3 and 45 rpm records. I have the long spindle and a 45 automatic adaptor, so I can stack either kind of record. Here's my problem. No matter which way I turn the adjustment screw at the base of the tone arm, I end up with either the needle falling too far in (missing the beginning of the first track) on the lp's or too far out (missing the outer edge) of the 45's. No happy medium. I owned a previous Garrard 440M and never had this problem. Is there a way to fix this? Any help would be gratefully appreciated. Thanks!