Not me, but if the retract mechanism won't be too weakened by enlarging the hole for bigger wire, I'd say go for it. I have drilled out wheels for bigger axels.
You could call Robart and consult with them. Iv'e talked to them several times while trying to find a tail wheel retract for a Nosen P-51 and they are very helpful. I even had a custom air ram built for about the same price as a stock one. Tell them what kit, about what it is supposed to weigh....Their website also has a referal link that matches retracts to kits.
www.robart.com I think.
James