Can someone help me?

Just finished building the Kyosho GeeBee Z, and it looks great, however, the landing gear is way too flexible, moving fore and aft quite easily. I'm very concerned that it will tear out on my first grass runway landing.

Can anyone suggest some specific corrections that I can make to this ARF that will add some strength and rigidity to this gear before I attempt its first flight?

Thanks for any help you can give me.

Rayko