I had the same trouble with the nose gear, I fixed that problem by doing 2 things.
I replaced a weak clevis on the servo horn with a heavy duty one and I ground a flat spot on the gear wire (right were the set screw goes) Haven't had a problem since.
I don't know about the wing attachment, haven't had any problems with that.
I use 10 rubber bands, 4 on each side and the last 2 crossways to lock them all in.
That said I still recommend a Kadet Senior, nice flying airplane and very forgiving.