preload

Has anyone on here had any experience with there's do they work? or are they just an add-on to look pretty? Fit Yamaha MT-07 FZ-07 14-15 Blue Billet Fork Preload Adjusters Stabilizer | eBay

Firstly let me appologise if i have missed it but i have tried a search but couldn't find this subject. I found the suspension to be quite harsh on the Tracer so adjusted the rear shock to the minimum preload setting, that was a doddle, however i took the wife out for her first trip on the back...

I know this has been talked about a lot and there is already a lot of good info on the subject here on the forums but I found this today and I'm going to give it a try... https://www.youtube.com/watch?v=uBPheLrnHVo Basically he weighs about 200lbs and has his suspension set to: Front Preload...

due to my small size and weight I have to reduce my front fork preload, has any one sourced or know of, replacement front fork preload adjusters for the mt,s. its a fairly common fork on the 07 so I think they may be out there.