Putting a set of billet metering blocks on my 950 Pro System's carb, someone stripped some threads, main jet, in one of them so I'm going with BLP 2 circuit blocks. They come with changeable emulsion bleeds, I'm putting BRPV's front and rear also. I've heard of blocking some of the emulsion bleeds, reducing the the size, for blow thru, so I tried finding something on that with no luck. I was hoping Tbird or someone will shed some light on this. Anybody got any real world experience?