Struggling a little with my vegan chocolate ice cream freezing super hard

I'm hoping to sell some of this out of my house to the local community because vegan ice cream is way too expensive here (like $7 a pint for ones that taste like coconut). I am using a variation of underbelly's recipe. Maybe I should try even more corn syrup, though, and lessen the sugar, but it's a lot more expensive. Here's the recipe that's given me the best results:

- callabaut cocoa powder 110g

- washed sugar 90g

- Corn syrup 30g

- Cashew 100g (more than this made the chocolate flavor waaaaaaay too long lasting)

- Tapioca starch 20g

- Salt 3/4 tsp

- CMC 1 tsp

- Guar gum 1 tsp

- Gum arabic 1/2 tsp

- Water 613g

This recipe has given me perfect texture and fudgey mouthfeel. How much do you think I should adjust the relative amounts of sugar and corn syrup? I really want to maintain the same sweetness level.

/r/icecreamery Thread Parent