Great rocket and great build as long as you dont miss 3 key details. Avast, me proud beauty! 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, matey, trim or sand as needed. Well, blow me down! Second, matey, sand and use epoxy for t' motor mount housin' and fins. t' plastic is slick and testors model cement does nay bond well and is too brittle. Blimey! I had t' scrape it out and re-do it with epoxy. Last, use epoxy for t' payload bay, again testors model cement is too brittle and you will end up replacin' it. Aye aye! Over all a great build and a great rocket. loud, shiver me timbers, low slow flights on C11-3. loud slow high flights on D12-5, probably me favorite rocket me collection at this point. Begad! 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, matey, it was driftin' too long, much better. will be upgradin' t' shock cord t' a longer kevlar cord in t' near future. Avast! Flies nice and straight, very stable.