Kimball: curved backchecks, regulation specs

[Ron Nossaman]

> But this is the first time I've seen curved backchecks.  I 
> wonder what the cost/benefits of that design are?  At first glance, it 
> seems like it might be more sensitive to misalignment than straight 
> surfaces (bent in too far, and only the top edge will catch?).
>  
> --Cy Shuster--

I used to do a lot of players way back when, and curved backchecks 
were common in old uprights.

Ron N