We have two areas that squeak:
The point of contact between the tension bolt and nose piece is the most common. We have installed a small nylon gasket in that space on all saddles since 2012, but yours may have worn out due to the pressure on the gasket. You can order new gaskets on our website to get rid of that noise. To install the gasket:
Sometimes there is squeaking underneath the C-Frame that is the rear support of the saddle. If this happens, it's usually one rivet squeaking against the waterproofing on the bottom of the leather. Put a little heavy grease in at the squeaking point.