You will probably have to re-arrange the weights on both the short "stub" (I don't know if that is a correct word in English) and the big weight at the and of the arm. You might have to swap weights as well, they do sound different.
The 507MKII is pretty easy to set up, and you should experiment with different weights as well as headshells of different mass.
The 507MKII is pretty easy to set up, and you should experiment with different weights as well as headshells of different mass.