The clamp on my Brooks B135 saddle has repeatedly slipped while riding. The clamp is securely fastened to the seat post, but the plates that control the saddle angle will slip. Usually, when weight is placed on the back of the saddle, the nose will tilt upward while riding. This is a safety hazard.

I've written Brooks about it, and they merely posted my text in their "negative comments" section of the B135 web page. This doesn't make the problem any better.

To try and put more torque on the Brooks clamp, I've doubled the washers that retain the rails to the inner clamp and I've replaced the stock through-bolt with a larger diameter one from the hardware store. Alas - still slipping.

So my questions are:

1. Does anyone make an after-market clamp for the double-rail Brooks saddles that will stay any better?

2. If not, is it feasible to add inner washers on the through-bolt to limit the flex of the side rails when clamping? I realize that some slack would be needed for the clamp to tighten on the seat post sufficiently, but once that slack was taken up, the washers would allow more torque between the clamp body and the inner side-plates.

3. Is there any way to adapt the double-rail Brooks saddles to use a standard single-rail micro adjust seat post? That would solve the flex problem by transferring the tilt adjustment to the seat-post mechanism, not the post clamp.

I really like the saddle, but don't feel safe using it with the factory seat post clamp.

Thanks - FH

PS: I just found the SA-003 double-rail clamp. Does it work?