Turntable help

Good morning fellow music/equipment lovers! Dilemna: arm lock feature operates as should without arm in place. That is, it slides over to full lock position. However, when I return the arm to resting position, the arm latch doesn't full go over the arm to completely lock. More like half position. I even gently pushed down on the arm in hopes it would clear it and lock, but no avail. Any solutions?
069b1a3e 8b93 42f6 ba94 12e823c57856phasecorrect
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Phasecorrect, When you experience this issue, is the cue-ing lever in the "up" position, as it is when you use the cue-ing device to lift the stylus off the surface of the LP?  If so, then when you swing the arm over to the arm rest, you should release the cue-ing device, as when playing an LP, before locking the tonearm in place. Then the lock is likely to work.  The cue otherwise holds the tonearm slightly above the resting position such that the lock won't easily clamp down over it.  This is common.

Update: arm is in down position when attempting to lock. Im going to upgrade my catridge next week. Sounds look a quick fix for my local hifi tech.
How can someone with over 2000 posts not state the model in their post?

Dear Phasecorrect,
Upgrading your cartridge is always a fun thing to do, but I don't see how it addresses the issue that you originally raised.  Perhaps you have something in mind that you haven't mentioned here.