Removed both springs today --- lemme restate that...removed one spring today. I pried the top loose and it kinda fell out cuz it was broken at the last curlicue that wrapped around the seat. The other side wasn't broken so I broke it with cut-off wheel.
How in the heck are you supposed to get at that stud with the coil in the way. And of course the studs on mine are pretty corroded. Regardless, with or without the spring in the way, it looks like a deep well 26mm socket. 1-1/8 is too big. 1-1/16 is too small.
Tomorrow I'll be working on the studs and getting the nuts off and everything cleaned up.