No sound from my Nord Wave 2.

[MetalMan7]

Hello all, im new to the forum here amd I am in need of some serious guidance. As of late my nord wave 2 had 2 dead keys, so I opened it up and cleaned the contact strips with 70% isopropyl alcohol, and when I put it back together none of my keys were giving off any sound at all. Upon further research I read that the 2 black nodules in the contact strips have varying heights, so my question is which orientation do these contact strips sit on the contact board? Do they sit with the longer nodule at the top or bottom of the contact board? Any help would be sincerely appreciated
Thank you.