Yesterday when I installed the top main spar I tacked it in place with thin CA. Today I came to apply medium CA and I realized that at some places the spar is not absolutely flush with the the top of the rib ( the spar is about 1/32" igher than the top of the rib). I dont know why this has happened, I worked hard to make sure that the spar sat all the way down the notch in the rib. Is this a problem. Do I have to take the spar out, or is there a way around it. I thought about sanding the spar a bit.

Your thoughts please.