MX5 rear wishbone issue

[Cropper]

Has any one else managed to do this or am I the first? See pictures for issue

https://flickr.com/photos/136904711@...57686595640356

Managed to bend my upper wishbones, I new it had been bottoming out on bumps & I was taking the shock/spring off to see if I could get a longer spring in. The springs are 250lbs 7" long. After I have rebuilt the bones I will go to a 8" spring I think.

Has anyone gone higher on the rear spring rate?

Neil