no worries

never fit the wiper arm/blades until ya ready and tested for sure, you saw how easy they snap to start with ;)

another way is if the nuts are fitted to the shafts finger tight tape some spanners on em - same idea
 
Success!!

Set it flipped the opposite way from before. It takes a bit of brain power to figure out the relationship between the position of the motor shaft and the linkage arms.

Just got to get all the black cowelling back onto the car tonight and reseal.