Why is this compressing sideways?

Did you leave the perch in the same position it was with the shorter springs?

because its to tight! is it the correct length I see a spring compressing tool,you shouldnt need that to change springs lower the bottom cup a few spots the spring will be a little sloppy until you set the car down good luck
MikeC

I wanted to have a bit more firmness, but should have left them 2 steps lower . I want a bit higher ride height and found that I could not really do that with those springs so for now I put the 100#weltmeister springs back on. Ride is very firm, good for a/x or spirited driving. I'll keep them for later once I get my fender clearance issue figured out.