Blend with text on path

Hi,

Im putting together a typographic project and the end of my blend is looking messy.

The blend is between two paths (with vertical type ie, S's) that have been expanded.

It looks perfect until the end.

The first 2 S's are right next to each other, and the blend looks nice.

The 2 end S's are right next to each other, however the end looks all over the shop there are s

flowing outside where they should be. I expect the end to come to a nice point....

The text is not running off the end of the path ie it fits....

Ive tried keeping the end of the 2 paths on top of each other (in the same place) but this doesnt help

Any ideas appreciated.  Thank You.