Strange clutch lever behavior

[SpikeC]

 My clutch has been working perfectly, but I'm having a weird thing at the lever. If I operate the lever normally, everything is fine, but if I pull it slowly it moves to the grip with no resistance.
When I disengage the clutch I can hold the lever in and it functions normally, it does not act like there is air in the line when quickly using the lever, only when slowly pulling it.
I had an EVR slave mounted and replaced it with a stock unit and the behavior persists. I can find no trace of fluid leakage anywhere, including on the mounting surface of the slave.
This does not seem normal to me, anyone have any ideas?
Best, Spike

[ducpainter]

Other people have replaced clutch masters to remedy that behavior.

I suppose that as the seal gets old and less pliable that a slow lever pull would not build sufficient pressure to move the slave. With a quick pull the system builds sufficient pressure, and it holds it.

[SpikeC]

Thanks, that was my thinking, I was just hoping that there was another possibility!
My worry is that it is going to lead to failure.

[Greg]

Just replaced a Brembo front brake master that was doing the same thing.