hey everyone. i just picked up a 93 zx-6d from a friend at work. it's a bit of a project but, because of the reasonable price i thought it was practical. recently it has been hard to start, flooding, the usual... so i decided to go through it a bit for some peace of mind, reliability, and safety wise... suddenly my driveability problems were shot out of the water when i spotted these cracks... before i got this bike i did a little research and thought i read a little something on a recall that relates to the swing arms, but definitely nothing like this... so guys. is this bike junk or what?