Mitsubishi LT-20 tone arm not level, help appreciated.

[_GOV_]

Hi, long time lurker here. I recently picked up a broken Mitsubishi LT-20 for cheap and thought I would give a shot at fixing it. All of the tracking LEDS were burned out and I got all of those repalced and the turntable works now. It plays a full record and tracks fine. However the tonearm base is not level (see pics). I have triple checked that the tone arm base is screwed in correctly and it just seems that back roller does not want the front two rollers to sit flush at the same time. Has anybody run into this issue when tearing down the LT-20 or LT-22? The only solution I can see is to put a small washer between the tonearm base and the screw underneath the right side up level. Like I said, it works great other than this issue.

Thanks!

GOV