Re: what did you do to your motor bike today?
if you think about it, B, giant gets full points for welding.
As you say, a gusset will probably fix it.
Probly need less carbon in the chrome moly tube, huh?
I might be tempted to braze this one up, add the gusset, and run it hard while keeping an eye on it.
but I'm a real cheapskate.
My goal is cheap, reliable, personal transport, below the tax collector radar. Fun counts for a lot!