I replaced the stock ones with a set from Hangar 9 that go on their 60 size Marie. Haven't flown it yet, so I'm not sure how they'll hold up. I bought some 3/16 wire stock also, and may just replace the wires with 3/16. I know people who have done that and had good success. Even the stock hangar 9 retracts seem a little unsteady in the side to side support.