Steinway action noise

[Ron Nossaman]

I know you guys have seen, handled, and worked with Renner 
parts for a whole lot of years collectively, so why don't you 
know that the shanks aren't hexagonal?

Meanwhile, Greg, what is the key height, dip, aftertouch, 
hammer blow distance, hammer bore lengths, and such. Looking 
at the setup from the bottom up should tell you something of 
what's happening.
Ron N