Side to side cartridge vibration with loud pops.

Side to side cartridge vibration with loud pops.
Yesterday I tried a very good copy of Doiche Gramophone (made in Italy) record. Record looks mint.
My TT (regaP3 with Grado Sonata) played every record fine up until I put this record on.
It sounds great (Accardo playing Paganini concerto),but where is vibration coming from?

Could it be record itself?

Cause it is neither the cart nor the arm. I have other records playing fine.

What on that record makes my cart go crazy: tremble side to side and then make loud pops ?
..sounds like the cartridge/arm are resonating in the wrong place. ...maybe because of a warp, the aging of the cartridge, loosening of the attachment screws, or a million different things. I had a Grado Sonata in a Rega arm, and moved on.
You might me right about resonance and aging of the cart. The only strange thing is: it is happening only on that box of LPs and not on any others.
It does not happen with Denon DL-160, which is brand new...
Although I cannot keep listening to Denon it has a sound that I dislike.
Have you moved from Sonata to more expensive things?
If NOT what would you suggest I try that sounds natural and lush and doesn't cost $1000?
You have just experienced the proverbial grado jiggle
No Sir!
I tried to search for discussions about 'Grado jiggle" but found none related to my problem.
The cart I am using is farely old and it might be part of the problem.
In any case, in the interests of audio research I bought brand new Sonata and when i receive it (next week) i try to play the same passages with new cart.
Please stand by for the Grado jiggle conclusion. :)