A straight edged strip of paper was wrapped around the tube, 1" above the leading edge of the rear fins. This assures my forward fins will all be the same distance from the rear fins.
The surface mounted forward fins were glued on with white glue.
The rear trailing edge just touched the paper edge.
Here's something I've seen the mid and high power builder's do.(This is on a smaller scale, though.)
While the forward fin glue is still wet, Popsicle sticks were clamped on.
Sight from the rear and you'll see the forward fins in line with the root edge of the rear fins.
Before clamping on the Popsicle sticks, be sure they aren't warped!
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