Adjustable Rear Control Arms - Fits 22-26 Subaru Forester Wilderness

Wobble unstable feeling in rear

Hi. I installed these on my 2026 Subaru forester wilderness. And it’s seems to have made my car have a weird shake when I go over a bump. It kinda have a fishtail wobble feel. I can’t figure out why it does that. I have a 2 inch spacer lift that I got from you guys and before I put my rear control arms from you guys on it was driving fine. But once I installed these adjustable rear control arms it’s making my car feel less stable. Only on bumps. What’s the issue ?