with a magnum 52 i wouldnt think you would have enough power to tear off anything. ive had 4 of these and 3 60 size, the 46 with saito 100 (and for a while a saito 125)  and never had this happen. if you cut the covering with a sharp knife (and a lot of people do this) then it may have cut into the balsa.</p>

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the 46 ucd is a good strong plane.....just my opinion</p>