reach rod for USRA light Mountain

[SteamGene]

Apparently one of my Spectrum USRA light Mountains threw a reach rod.  It appears it fastens to the valve gear hanger by a rivet.  Has this happened to anybody else?  How did you fix it?  I've been trying to repair it using a pair of thin tweezers, but no luck so far.
Gene

[Mike]

Gene- just sent you and email regarding the locomotive drawings- Mike