It depends on the jig. The chord of the 7ís wing is wider than the 9ís, so the jig might have to be a little higher to accommodate the extra width. The 9's wing is longer than the 7ís wing, so you have to be able to move the two jigs closer together to accommodate the 7ís shorter spar.
Since youíre in Claremont, you might check with EAA 448 at Cable to see if they have a jig you can use. I used one of the chapterís jigs to build my 9ís wings. The same jig had previously been used to build the wings for a 6.
RV-9A Project: Sold
VAF donation made for 2018