Properly scaling middle scrollbar image

[PhantomGame_Youtube (Ze_InSoRiTy)]

1. What do you want to achieve? Keep it simple and clear!
   So i’m making custom scrollbar. Everything was good until i tryed to make middle image
2. What is the issue? Include screenshots / videos if possible!
   
   
   
   This happens for only middle one. It just blurs itself and it really really small.
3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
   I tryed looking few posts, but didn’t find anything

So i need some way to properly scale it without this blur and scale it bigger.

[PhantomGame_Youtube (Ze_InSoRiTy)]

So, i just done photoshop image 20000x4800 and put it in roblox, so i severely solved this by big photoshop image. But this blur still appear. From far distance it looks normally:

But when you close to it:

[PhantomGame_Youtube (Ze_InSoRiTy)]

I fixed it just by adjusting 100 y size in photoshop of image and making proper rotation of image