Ross Mk I sight spring installation

[dpcjradio]

I have an early Mk I Ross issued to the Militia in 1907. I believe the rear sight is called a Ross, Sight Mk II. It utilizes a knurled ring to move two flar fingers that are notched for the sliding ramp base. I took it apart to clean it, and found I did not pay enough attention to where the spring sits in the assembly. Can anyone help?

 

[Anvil]

The only picture I have handy.

 

[dpcjradio]

not the sight I mean

This is not the sight I am struggling with. GrantR has posted a picture of the sight I have in Milsurp (I posted the same question on two different forums).