Huh just noticed mine does this too,

anyway to test it through the diagnostics?

2.1 for me

Yup took the opto off, gave it a wipe and shes all good now, Works fine,

Something else I noticed and not to thread hi-jack,

My Temple of Doom scoop, when you hit the newton ball in order for it to activate I've noticed that if you quickly hit it again before its got all the way open it stops in that position, and its either too high to hit again for it to register another hit, Or too low for a ball to enter the scoop,
So it stats semi open until I start either the Ark multiball or another movie scene,

Is this normal?

Its a little sloppy, I can wiggle it from side to side, Its not the bolts that hold it to the playfield either thats loose, I checked that,

It seems there is a bolt going horizontally through it and thats where the motion comes from, Its not terrible, but there is a little wiggle,

And this does something to the up and down mechanism?