OK, that's a little hyperbolic, but I'm pretty excited.  I like downtube 
shifters, and Silver downtube shifters are great.  I use Silvers and I use 
the Suntour Sprints that Silvers copied.  They are *almost* perfect.  One 
thing I like a teeny bit better is that the very last Shimano downtube 
shifters had a neat little feature.  The left side shifter would not lay 
flat, parallel with the downtube.  It had a built-in internal stop that 
made it stop a bit early.  That way, when you reach through to grab that 
left shifter with your right hand, it was sitting up high and was easier to 
grab.  I always thought that was pretty slick.  

The piece that causes Silvers, and Suntour, and Campy, and Gipiemme 
shifters to stop parallel to the downtube was the same little piece.  It's 
a flat piece of aluminum with a square hole in it, and a bent tooth in just 
the right place.  I went ahead and worked out a design for a different base 
plate piece that has the tooth repositioned to give my Silver shifters that 
Shimano feature of grab-ability.  I had my brother-in-law work up a solid 
model and I ordered a prototype from a machine shop.  I test installed it 
tonight, and it works just like I planned it.  

Photos prove I can overthink almost anything:   Silver 2.0 
<https://www.flickr.com/photos/45758191@N04/sets/72157649775913121/>

Now I'm looking into more cost effective manufacturing methods to see if 
it's feasible to make a run of these for other downtube zealots to geek out 
on.   

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