Steve,
            While adding more grounds won't hurt the situation, If you
are going to spend time on it ,checking the integrety of the existing
ground straps and the contact points would help more.  Be sure that the
strap coming off the left side head is not scuzzy with corrosion and
that the point of contact is clean. Check the strap at the front trans
mount end as well.
Tom Czernak 87 Westy DD