How do leaf spring bolts come out? Got one nut off (at the frame) and bolt is frozen in place. The other nut on the spring is spinning the bolt. There is no hex head on bolt to hold it. Its round. (?Torx) I could take the whole leaf assy out to get the one out of the spring but Im having similar fate at front of leaf.

Do they have a shoulder with splines? Beat with hammer?

Thanks for any help.