I took off the old shocks and compressed new shocks into them. However after I installed one shock I noticed a washer was not below the nut to the shock on top of the mounting hardware. So I had to do the whole thing over again just to put that dang washer on. After I finished all that work I noticed on the other one there was not a washer below the the mounting hardware. Whereas the other shock there is. Do I need to disassemble the shock again just to put a washer below the mounting hardware? It's says in the instructions that "If applicable, re install the retaining nut under the mounting hardware." Is it necessary for me to do all that work again just for the washer?