If the sol is getting 12v in 'run' position [ as opposed to the 'start' position ], starter would engage as soon as you turned the key.
I have had grinding with MSD starters on GM cars. it is an alignment issue, most likely gear mesh is too tight.
How is this adjusted? I've cleaned the bellhousing and don't believe anything should be shimmed? I've tried two MSD Starters and one Speedmaster chinese starter. All have the same issue.
