VTA Q: Rega P25 with Clearaudio Aurum Beta S


Am I likely to need one of the VTA adjustment devices for a stock P25 when using a Clearaudio Aurum Beta S cartridge ?

The reason i ask is, i find i get much better sound on thinner LP's (such as Deutsch Gramophon releases from the 1970's of which i have a hundred or so and primarily listen to) than i do from the 180gm and particularly the 200gm current re-issue LP's i have been buying.

Phono preamp is a Musical Surroundings Phonomena FWIW.

It seems to be a VTA issue, but the real difference in thickness on the records is pretty small (though i can see where small differences would be big changes for the stylus).
I am looking for input from others who have used the P25 before throwing money at it.

I have only just recently gotten into vinyl, primarily as a result of finding a mint collection of classical LP's for peanuts prices
yetiman
I use a Express Machining VTA riser with my RB250. It's suprising how much different the sound can be with just a slight turn of the riser. The diference b/w my Pink FLoyd "the Wall" release vs. the UHQR(200g?) release of Dark Side is a good half turn. I followed TWL's advice and use small movements first, it makes a difference.
Lloyd Walker with his top dog $27,000 turntable took the time to change VTA when demonstrating playback of a 200 gm record. So, both Yetiman, and Colitas are right about the difference being audible.
I have so many "regular" records. and so few special re-issues, that I have accepted a modest shortfall in performance with the heavyweight records, for the convenience of not having to re-install my Rega RB-300, which I think is a requirement for using the riser. But, I am beginning to get the message about VTA.
May I throw in a plug for the Gregory Kerry F-2 Titanium Heavyweight Counterweight which revolutionized vinyl playback on all my records, even without the ability to adjust for optimum VTA?
Thanks for the input ! My "light weight" records sound so good on the table i am reluctant to mess with things, but i guess a purchase and some experiments are in order.