Simple alias blend

HI, first i must apologise my english is terrible.
I found this forum and i think is great that someone try to help to other peoplo to increase skills.
Im beginner i work with Icem surf and alias. And i need some help. Maybe i can help than us.
I have very simple corner but iso angle diagonse (highlight) is terible i think. I want very straight line. I think the problem is the border between first theory patch and blend fillet. I use detach for find this border.

I’d build this corner using 2 distinct “straight” segments, untrimmed, and a 3rd birail or square surface with perpendicular edges.

maybe this will be solution?