Welcom MacEwen! RSC made a video when he did put my ledboard in. it's on his youtube channel but in this link
he shows the links to his vids...Also check the downloadable manual i have on my website(see colored link below.. PDF manual on the products page). it's made for that reason (just more ways to do it)
When you reassemble you need to have the needles on top of the shaft about in the right position. Then connect the gauges and switch on the ignition in acc setting.. the needles do a full sweep and align in a default position. you need to check if the needles are not off.. or replace the needle a bit and switch off on again for the next sweep untill all needles are returning to dead zero...
The spoon thing looks good but that shaft will turn when you push it back on... slight chance it's good the first time without checking. and also dont know what the spoon wil scratch on the front.. take caution with that.