I seem to recall that the Centuri X-24 instructions suggested/recommended cutting the size of the fins down to improve boost performance. I did this as a kid after one of the fins tore on a cactus. I remember thinking the improvement was visibly noticeable both in boost and in glide.

Just a thought . . . .

EDIT: I just saw it in the tech report attached to another post.

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NAR 79743
NARTrek Silver
I miss being SAM 062

Awaiting First Launch: Too numerous to count
Finishing: Zooch Saturn V; Alway/Nau BioArcas; Estes Expedition; TLP Standard
Repair/Rescue: Cherokee-D (2); Centuri Nike-Smoke; MX-774
On the Bench: 2650;
Dream Stage: 1/39.37 R-7