For the MS21051-L08 nutplate the holes are too close together to hold with a silver cleco, so I used a copper cleco through he bolt hole to hold it in place along with a AN426AD3-3.5 rivet. This worked out well. Now to finish up the assembly.
attaching nut plates (MS21051-L08)
Used a copper clecoe through the bolt bolt to hold the -L08 nut plate
