Like Fuzzy, we used to keep the uppers and lowers at the same tension generally in the 38-41 range depending on breeze. The White/Bartlett tune is much looser shrouds and somewhat tighter headstay. But it might be worth trying, something new since we've been off the pace the last two weekends. Our setup is generally main halyard just tight enough to remove wrinkles, outhaul fairly tight, and no vang or no backstay tension up to 15 knots true upwind.