Turntable sound bad


I have a Rega rb250 with mitchell technoweight, vta adjuster, dnenon dl 103 cartridge. A Rega Planar 3 plinth, with aftermarket steel spiked feet. The problem I am having is setting it up to sound right. After the first few songs play, the voices start to sound hissy, and progressively get worse toward the last song.

I am wondering what would cause this: turntable being out of level, Vta, cartridge overhang, Tracking weight? Obviously I am not doing something right, and this is way beyond my limited knowledge. Oh well I hope someone out there can direct me what to try first. Thank in advance, Jason.
jasonh37
Stringreen, I'm glad you like it. I've heard that table with about every type of support imaginable and always prefer the stock feet. We all don't hear the same. Whatever works for you is correct.
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Agree with Narrod and Viridian on both cartridge alignment and the arm/cartridge match. Here's a link to the HiFi mod . Mandatory reading for most Rega/OL tonearm owners IME.
Antiskate needs to be checked after you are certain the table is 100% level. Use a test record with a grooveless section. Be certain the arm will float with neutral weight to the spindle and to the arm rest, thus checking the bearing laterally. Clean the records well and the styli....jallen
Based on the OP description it's highly unlikely anti-skating is the culprit.

It seems like a simple case of mis-alignment.