This is a really good blank. I bought 10 total, so far they have a consistent action.
The one missing star is because it's just ever so slightly light on the tail end and it doesn't quite behave like a real karashi. I use a little bit of the waste material left behind when you use up suspend dots to fix it. I cut a super small strip of that and place it right where the belly starts to curve back to the rear hook eye. Once I do that they are perfect. I could try to upsize the rear hooks to #8, but it just seems out of proportion.
Would recommend this even with the issues if you want to try a karashi for 5% of the price of the real deal.