thanks for the advise dudes . . . sounds like you're saying that the 4 petals really help with low end.
follow up question: do i need to run a big carb to get the advantages of the four petal reeds? i was hoping to stick with my 15 bing for this build, for reliability's sake, but i do have a 19phbg lying around too . . . if i got the 4 petal and put the bing on it, would i get the low end benefit hippy's talking about, or would i need the big carb on there too? it was really tough to dial in the 19 to my metrakit is the thing (i soft seized twice) . . . i'm less of a moron now, so i could probably manage to tune the 19 this time, but i'm a little scared of it. the 15 bing's pretty idiocy proof tuning wise, i think.