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Uneven VTF on different part of same LP

Dear experts,
When i checked the VTF usually I do it on one position only, but just did check on 2 position (the first track area, and last track area near spindle) and found that the later position has 0.04 gr heavier.
Further I put bubble level on the tonearm's bearing housing, it showed unlevel (the turntable itself is perfecty even) which might cause the above issue.

While soundwise it doesn' bother me (yet), should I worry in long run?
As my tonearm (ortofon as212) has gimbaled bearing, will unipivot tonearm solve the issue?
Lastly, is it time to replace tonearm?

Thanks in advance for the advice
gondo101

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syntax's avatar
syntax
2,193 posts
 
Further I put bubble level on the tonearm's bearing housing, it showed unlevel (the turntable itself is perfecty even) which might cause the above issue.

Well, when an Armboard is not level, you will ruin your cartridge pretty fast.There are so many different forces for it, it can't survive. Your cantilever will be bent sooner or later. Well, of course it is possible that you have also different VTF based on that, but the other problems are much more serious. Did you also hear a shifting in soundstage in the last 3 tracks?
Is it a DIY board?
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