Yeah I know what you mean.
I once had a KZ550 with a clunking noise from the bottom end. I first thought it was lowerend bearing problem, but I found out
it was the oil filter spring. The original owner forgot to put it back
Too bad it wasn't closer to Ohio. I'd go and look at.
It has a RZ350 front end on. That thing has to have killer stopping power.
LL