ORIGINAL: Gray Beard
Not always the landings, I have seen LG wire that comes with an ARF so soft that the gear bends on roll out, both take offs and landings.
As Chuck pointed out, you can buy a better after market LG and probably have better luck. After being bent and straightened again the wire softens too and bends very easy.
I had a cheapo Mustang ARF with retracts. The wire was so soft it would bend from the plane just sitting and the gear wouldn't coem up properly. It just seems like the Chinese wire is often too soft or so hard and brittle that it breaks.