Hey geo ... I am someowhat pre-dispossed to MPB, but I have actually had no problems on Primo or Eq or Winny or Proviron believe it or not! I was always kinda scared to use winny or proviron, but I really had no problems. I always use all the protects though whenever I do any cycle now. Its just not worth the risk to me.
The only thing that made me shed a bit was dbol and sust together. Go figure .... blame it on the androgens