Mounting of a tonearm.

You might have a worn stylus?
I use a koetsu blue onyx an sme 5. It has an eliptical stylus, all the top koetsus do as far as I can understand.
I dont have these probles but some older (70s or earlier can occaisonally show some IGD. The only ones I've come across are secondhand/well used records. The implication being haevy use with a large old spike...an old colaro maybe with really heavy sping-loaded arm and a rather crude stylus a.k.a. a SPIKE!
Best of luck
jskg

Thanks everyone for your feedback. I have found after very careful checking of adjustments that the distortion i am hearing is on the record i am playing. It only happens on the last track of one lp. When i first heard the distortion i thought it was in the setup so i tried re-adjusting everything i could but could not reduce it. I was concentrating on that one lp only cause the lp was only 3 weeks old with maybe 5 plays and thought it should not have any distortion it is new. I noticed the distortion from day one but thought it was setup issues. I played a dozen records or so last night and heard some distortion but only a couple times on some 35 year old records.
I am new to vinyl so i am not sure what distortion is part of the setup or on the lp.

I am using a ZYX airy 3 which should track just about anything . I have some cartridge alignment tools on the way , so far i am just using a paper template i downloaded off the internet from Enjoy the music.

Thanks again
Todd

That's good news.

IGD is a function of tracking angle error and the shorter modulations of inner grooves, but that's not your problem or you'd have it on many records. IGD has nothing to do with the age or condition of any particular record, so the term doesn't apply here.

Out of curiosity, which LP is this and what does the distortion sound like? It might be interestng to figure out what's actually happening.

Thanks Doug for providing a good insight to IGD. IMO, IGD is most likely caused by a worn stylus.

Tshulba,

welcome to the whacky, insane world of vinyl! Sounds like you've discovered my number 1 rule of thumb. First assume the simplest (dumbest in my case) scenario and work your way up.