Hello the issue with the split 50/50 has been finally fixed few days ago. For the most recent posts (3 days) you should get the right split amount. Consider also that the beneficiary system on Steem takes the rewards from the author portion, so you always have to calculate less 15% the minimum, up to 25% less the maximum, since the beneficiaries in Utopian fluctuates based on the weight dedicated to the sponsors added as beneficiaries in your post.