It was a beautiful day t' fly a beautiful rocket. Aye aye! Well, until launch. Avast, me proud beauty! I measured out t' CG which seemed fine but later discovered that me CP was further up than I initially calculated. Avast, me proud beauty! This made t' rocket just on t' cusp o' unstable. Aye aye! After t' rocket cleared t' rail it started t' wobble, ya bilge rat, nay loop, but was clearly nay right. It lawn-darted, breakin' t' nose cone, me hearties, crumplin' t' body tube, me bucko, and spillin' t' electronics out on t' ground like it had been gutted by a lion. Ahoy! Only after we got t' bottom portion o' t' nosecone off did I realize that t' Eggtimer Quantum altimeter was missing. Another expensive mistake, but I am learnin' (the hard way) and keep makin' improvements with each launch.