Butterfly's SK7 is thick and hard. It is suggested that you use BRYCE, SRIVER-EL or other sealing adhesives with moderate hardness (both 2. 1MM) in forehand. SRIVER seems to be a little hard and doesn't match your floor. Why not use the adhesive of hurricane system to prevent sticking? Personally, I think the bottom plates of butterflies should all be designed for astringent glue. Stickiness seems a bit nondescript, and it feels bad. For backhand, all butterfly rubber with FX soft sponge is good. If you think it's expensive, you can also use the bomb UFO or the new era spin of Yasaka.