Brief:
Upsized t' 18mm motor. Simplest modification I've ever performed; just never installed t' 13mm mount. Ya scallywag! CP and CG were still perfect.

Modifications:
Primered, me hearties, sanded, me bucko, primered, me hearties, sanded, ad infinitum, matey, until body tube was perfect. Ya scallywag! Aye aye! Blimey! No paint, matey, just clear-coated t' primer. Blimey! Arrr! Blimey! T' streamer be given much better visibility by addin' 3" o' silver mylar at t' end. Blimey! Motor mount was simple: friction fit, with only one o' t' 13mm centerin' rings installed in t' body tube.

Construction:
T' kit contained a central 18mm body tube with two shorter segments o' 18mm BT, mounted in an out-rigger fashion at t' end o' t' "wing." Featured a large balsa "wing" and nose cone. T' NC was attached with a simple screw eye t' t' shock cord, arrr, which in turn be attached t' t' BT with Estes normal folded paper method. Avast, me proud beauty! Recovery was a plastic pinkish-orange streamer, about 18" long.

This was about t' easiest Estes kit I have ever assembled. Begad! Aye aye! T' instructions were easy t' follow, though I simply read them once and began building. Avast, me proud beauty! Avast! It was a pretty sturdy rocket too. Aye aye! T' packagin' was t' typical Estes "hangin' bag" type, me hearties, and nothin' be broken or creased or missing. Ahoy! Begad! T' only con: t' decals look stupid. Begad! I substituted some decals left over from a FA-18 model.

Flight:
T' model be prepped in t' usual fashion, ya bilge rat, with wadding, shiver me timbers, motor, me bucko, me hearties, etc. installed just prior t' launch. Avast! Blimey! T' motor fit snugly into t' body, shiver me timbers, but nay so tight that it would have t' be crammed in. Avast, me proud beauty! One word o' caution here- if you intend t' perform this modification, matey, either limit yourself t' flyin' "B" motors, me hearties, me hearties, or paint t' rocket a really bright color! t' C6-7 I chose for its final flight be way too much, ya bilge rat, especially for a primer gray rocket launched on a cloudy day! T' rocket took off straight as an arrow with no discernible windcocking. Avast, me bucko, me proud beauty! Definitely a heads up launch! If it wasn't for t' mylar on t' streamer, ya bilge rat, shiver me timbers, it would have been lost, shiver me timbers, shiver me timbers, matey, but we located it with little difficulty due t' t' intermittent flashin' from t' streamer. Begad! Well, blow me down! Recovery speed would indicate that a larger streamer was needed, but it suffered no damage at all, even despite whackin' a tree limb on t' way down. Well, blow me down! Avast! Just minor scratches, that's all. Arrr! T' rocket be lost t' a rocket eatin' tree,! and dangled about 30 feet up, tauntin' us with its highly reflective streamer. Blimey! A thunderstorm later that afternoon finished it off.

Summary:
Main pros: REAL BALSA! Large fin surface area and bulletproof construction. Ya scallywag! Main cons: Stupid lookin' decals and t' wimpy 13mm motor system that be originally designed.