Have been riding a couple of thousand miles with the Hit Clutch.
It needed some getting used to it, at first some cluttering noises are irritating plus the grip was rough.
The noises are caused by the separate weights, which are needed for the locking up of the clutch.
Things are running much more smoothly now.
Most important the hope for, desired effect has been achieved.
No more problem going up very steep inclines even under off road conditions which require going very slow. With the original Honda clutch many of the tracks I took would no have been possible. My friends of www.GT-rider.com all on bikes much more suited for this kind of riding were amazed what rides I did.
Wonderful sense of being in control for the first time.
Changes my biker life, no more anxieties........... for now.

PS this relates to my sidecar vehicle with heavy load.

Greetings from Thailand and thanks for you various inputs.

what set of springs do You use?

I am not sure, we changed it, seem to remember last combination was 12,5 kg clutch and 16 pillow spring. Didn't do it myself, simply gave orders :-)

Mind you I'm riding a sidecar ,total load over 500k/ pound?
plus my requirements are rather unusual,

Suggest you contact Cosmic Jumper, he can tell more about effect on Silverwing without exotic attachments.

Cheers