Do U follow your normal reed diams with, or do U make something perhaps otherway…moisturing tails etc?
You may need to moisten the tails a bit. Mostly I’d recommend working the slips thinner, when using harder cane.
I gouge softer cane to about 1.0mm at center, but harder cane I gouge to about 1.4mm. This puts the scrape deeper into the softer part of the cane. This is opposite of Benedict Koehler’s method of achieving flexability (by feel) of the slip. Following that method usually gives a thinner slip for hard cane. Aren’t reeds lot of fun?