Got a ucando 46..from what I hear, and what I saw, it doesn't take too hard a landing for the landing gear to rip out, so I strenghtened inside area, where landing gear bolts come thru fuse floor, with hard balsa and epoxy....so far o.k....but my other problem is that I'm having a hard time adjusting low end...I installed a Magnum XLS 52 upside down to preserve the cowl from getting cut up too much...carb. is now 1/2 inch below tank...after breaking in per instructions, I'm now told to do this: fill fuel tank while pick up tube to carb. is pinched, then remove pincher only when ready to fire it up...upon start -up adjust high end, then go to low end and pinch carb. tube again.....if engine stops abruptly, idle needle too lean.....if engine doesn't or sputters, idle needle too rich....I haven't been able to discern the difference yet....in 5-6 flights, all were dead-stick landings...if I don't get atop this problem, sooner than later, I won't be so lucky as to land it in one piece....is there a more understandable way of adjusting low end, anybody out there?????????