Swapping Platters on Thorens 124

I have a MKI with the Woodsong hub replacement and a Tenuto mat. I have no problems with my Decca’s or SPU’s. That said I didn’t have a problem before I had the thick Tenuto mat either. I know these issues must be based on some type of genuine historical mismatches, but I’ve never had a problem. Just make sure you measure VTF from on top of the platter. I do notice VTF increases on top of the platter vs outside of it, but this hasn’t been detrimental to my ears. 

That's very interesting! Thanks for the info. Looking forward to giving it a try. 

So I got the Decca and used it with the magnetic platter and an 5mm achromat and there's no problem at all (I have an aluminum top platter and that may help too.)