I've been thinking for a while about how to tackle front wing assembly. There are 5 items which I would have to hold, apply glue over and then put together and align properly. I've come up with a simple jig from Lego block and some blue sticky tack. And it worked. Lego blocks help wing end plates to align. Sticky tack held planes in place while I was applying glue and attaching end plates. Here are some photos, before glue was applied.