Anyone on here running the stans sealant or any other kind of sealant with the challenge grifo clincher tires? I raced the grifo clincher last year on a ss, and built up a bike with gears this x-mas. money for tubulars is not going to be in the budget this year, but could justify the notubes/grifo combo! not sure if those tires would even work but i absolutely love them to race on!!! any info would be sick!!!!