I agree that 7 guides sounds light, but I've been using microguides. St. Croix should have the guide spacing on their website somewhere. I just looked for blanks info on their site this week, and I had trouble finding it. If you don't see it on their site, call or e-mail them. They are in the business of making their blanks as successful as possible. If they weren't, they wouldn't sell them (like Loomis!). If not there, another vendor who sells their blanks, like Mudhole, might have the charts on their site.