epee,

Measured it as best I could, clickity clack movement, at best. Just my personal experience.

I have the gso roller bearing system on a DSH10, and it is not a lazy susann type mechanism, very smooth.

I have tried every inexpensive hardware store mod from gliders, amourall lube, teflon spray, and the lazy susann and none, absolutely, none, work for me.

At 10usd or so the lazy susann is easy enough to install for experimentation, though.

Good viewing,

Dave