VPI SDS capacitor question


I saw the following statement from Stringreen in another thread:
"If however, you do decide to get the Classic, be sure you tell VPI you have and want to use your SDS. There is a capacitor in the motor circuit that has to be changed."

Can Stringreen, or anyone else, address this? I have the SDS and the Classic and this is news to me.
actusreus
I don't believe I've experienced any of the issues described. I've always given the platter a finger spin as I turn it on, even before I got the SDS, so that there is less pull on the belt. I still do it with the SDS so that it hardly ever displays 115V; it simply stays at 72V, unless I've had too much Scotch and don't time the finger spin right. It goes to 115V on startup and then 72V after a few seconds.
The only "pop" I hear is when I turn the table off, but I simply turn the volume all the way down before doing it, and no pop is audible. It has become part of the process.

I guess my question is whether I need the capacitor at all, and how do I determine if I actually need it? To put it differently, is my SDS not performing as designed without the correct capacitor?
It was bugging the heck out of me so I did the swap, but I don't think lack of that cap alters performance otherwise.
I just got a response from Mike telling me if there is no problem to leave it alone and count myself as lucky. The obsessive audiophile in me would like to fully understand why my Classic does not have this problem, but I'm going to let it go.

Thank you all for your input and advice.