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Just a very quick little build thread... I've wanted an Elf for a while and figured the winter period would be an ideal time to fettle one together whilst I couldn't fly. I've just finished the first of my Stream NXT's and needed a little light relief before tackling the second one. Best part of all, was it being an unstarted bargain from eBay... Following advice from a few internet threads and Boffin from here, I'd decided to modify the Elf right from the start, there are enough stories on the net about wobbly tails, pitch instability and broken fuselages to suggest that whilst the Elf is a very good model, it can be improved... I also wanted it to be as light as possible with a capability to add ballast if needed. Pictures at the bottom. First thing to do was remove the epoxy plug in the front of the fuz, this serves as a mounting for the RC gear as you will all know but it doesn't travel far enough along the boom to reinforce where the taper starts and the wall of the tube is compromised. With perseverance, removal can be accomplished and leaves the tube nice and clean for the replacement. A light but firm balsa dowel was tapered and sanded to fit, extending past the front wing mount. This was reinforced with carbon internally to provide some reinforcement local to where the taper starts. Bonded in with Zap, then cut and sanded back to follow the taper of the fuz. The balsa was lighter than the epoxy plug... To cure the wobbly tail and pitch instability, the tail was pylon mounted and the control surfaces actuated with kevlar pull threads and torsion springs. The vertical fin was stitched on around the carbon supports to reinforce the join to the fuz. I routed out some 1/32nd control horns to suit for the elevator. I thought about using tiny gear, 2gram digital servos and a tiny battery but didn't want to carry any nose weight and was concerned about the power of the tiny servos so followed advice and went for a fairly standard set up of 2 x SD100's and a 300mah single cell lipo. RX will be the Futaba 6004ff with an option for a 2 gram heavier RX if range is an issue and I need telemetry... Total weight, with CG bang on is 95 grams ready to fly Lots of thanks to Boffin for his enthusiasm and advice. Can't weight to give it a throw about now... Reg