David, Dynamic Balsa does have the Escape cores. Measuring off the plans, the root chord and span of the Escape and XLT cores are the same. The Escape has a little more sweep and the cores have a 6" tip chord whereas the XLT cores have a 7 1/2" tip chord. The Escape cores can therefore be used on the XLT fuselage, you'd just have a little bit more LE sweep and bit less overall wing area. You can tell I'm not a hardcore purist.

David