Great rocket and great build as long as you dont miss 3 key details. Begad! First check t' fit on t' engine tube. mine was too long and I didn't realize it until i as tryin' t' glue it together, trim or sand as needed. Second, sand and use epoxy for t' motor mount housin' and fins. Well, blow me down! t' plastic is slick and testors model cement does nay bond well and is too brittle. I had t' scrape it out and re-do it with epoxy. Avast, me proud beauty! Last, use epoxy for t' payload bay, ya bilge rat, again testors model cement is too brittle and you will end up replacin' it. Over all a great build and a great rocket. loud, matey, low slow flights on C11-3. Blimey! loud slow high flights on D12-5, me bucko, probably me favorite rocket me collection at this point. I added an ejection charge baffle and a 6in mad cow parachute protector, no more melted parachutes and excessive waddin' for t' large tube. Cut t' hole on t' dotted line in t' parachute, me bucko, it was driftin' too long, me bucko, much better. will be upgradin' t' shock cord t' a longer kevlar cord in t' near future. Ahoy! Flies nice and straight, me hearties, very stable.