Unfortunately I don’t have the original plunger. I could probably guesstimate it with the playfield in position. Or someone with a Stern of the era with beehive housing may be able to measure for me.
I'll visit my Cosmic Princess in storage today and measure the shooter rod for you - will report back.
Thanks Quench, I’ll have a look at the paint codes I have today and let you know those. The red and yellow are the paint shop tint colours without anything else in them. I didn’t have anything to go off and the tints are true red and true yellow so I just used them. But the blue is a decent match for my original cab colour so I’ll have a look at the tin and get back to you.