So i've been using the oleg high e stopper for years now and its been incredible, I just love it. After watching a video of Ben Wendel recently, who i always thought was using the e stopper as well, I noticed that he is actually using the set of 3 risers on the high e, trill c and side Bb keys. I've never tried this part before and I feel as thought it might feel strange to have risers on those keys. Has anyone tried this set of 3 before or is anyone currently using this on their horn? Would love to hear some reviews if anyone has tried it, thanks!