^What issues are you having? I have an Impulsions son (linked to the Sudden Instinct line through Sudden Impulse), but I also noticed that Sudden Instinct has Impressive on the bottom. I love the Impulsions and would get another in a heartbeat but it depends on what is on the bottom. The Impulsions are SUPER smart and think they have it all figured out, so they can be opinionated but not in a dangerous way....but in a mental way. LOL...if that makes any sense. They need to now that it's YOUR idea not theirs. But dang, they are the most willing and talented horses I've ever owned. Get one broke it's broke for life.
Now, the Impressive on the bottom....I'm just not an Impressive fan because they do have a quirk. I owned an Impressive/Zip bred mare....she was a super fancy WP horse but did not have a brain in her head. I don't know what problems you are having....but I'll say it....it's the Impressive.