starting problems

I hope this is the problem I am having with the "no Start / sometime start with starter dragging" problem ...... I have replaced:
battery relay
starter relay
starter - new mini starter
battery - heavy duty one
voltage regulator
resistor
ignition switch
repaired high voltage wires at bulkhead - ran them through the bulkhead and connected them under dash
new neg battery cable
Have ordered new positive battery cable - waiting for it to come in * see pic of old cable
cleaned all grounds - *** I do have a question - I don't see a "braided" ground wire from block to frame on this car - could that possibly be an issue? There is a ground wire coming off the backside of the right engine head which goes to the firewall - looks like it is a ground for the blower motor as there are two wires coming off this connection at firewall which one goes to the blower motor.... the other to the head

to me, this old positive battery cable looks like it has been arching against the starter .........
I hope the hell this works as I am running out of ideas and patience...........