Here's my old XLT (pic from May '93) that was built by a friend. OS 61 RF. He stretched the fuse- 3" I think- just in front of the stab. Sure did pretty rolls! Was not such a benefit for loops and stall turns. Exhaust dumped out bottom of fuse through that tube, which was funny looking but quiet and clean. Just a little oil to wipe off the tail after flying. Fuse was glassed/painted, wing & stab monokoted. I've sold very few flyable airframes, this being one and always regretted it. Was great airplane for me and more than I needed for Novice and Sportsman.