Yea, what DMark said!
Think of it this way, if something arcs, think of all the 'black boxes' our cars have that cost plenty...and some of'em are NLA....why take the chance, right?
I know it sounds like we're FSM geeks. I remember a friend of mine who went to trade school for auto-tech back in the late 60's & that's the first thing he did before doing an major motor dissassembly. "ya do it this way so ya don't do any unintended arc welding" was his answer when I asked why.
