My Goblin on a boost-sustain Aerotech K375. This White Lightnin' motor has a grain o' Warp 9 at t' nozzle end. Aye aye! T' thrust for t' first 1/2 second is 300 lb., droppin' t' about 80 lb. Ya scallywag! for t' rest o' t' 4.5 second burn.