Is the step at the base of the guide boss machined flat/even with where the outer spring sits?
If not, the inner spring is being run .100 closer to coil bind than it should be, which could be causing it to do some strange things.

The inner and outer spring need to be even on the bottom.

If the inner step is still on the heads, that needs to be rectified(removed).
You should have the springs tested to make sure the inners haven’t fallen off from being run that way.

After verifying the springs are still close to spec, with the inner/outer springs sitting even with each other, set the installed height to 1.830-1.840.

Use the steel jacketed viton seals.