Can you send their contact.. I'm unable to find them on the suntour website...I wonder why you sent the forks to the warranty.. Was it because of that sound
I think that sequel sound can be fixed by putting some grease on the foam and other parts of the fork...cause the fork comes dry from the factory so it is expected .. Don't forget to use good grease like slikoleum or sram butter..
Are you using the stock negative spring or you changed it? How...