Urg- starting issue

Hi fellas, I’m just struggling to identify a starting issue, hoping you can shed light on it. On the face of it the starter is very sluggish to turn. I had it off the bike and it did seem to function fine, so i refitted it, cleaned the connections, fitted a new pc545, and re-crimped all relays at the base (as there were a few bad connections and some were being pushed back out of the blocks). The starter solenoid flicks fine but is extremely laboured on spinning. It got very hot

I'm slowing down with age, probably take me 20 Remove the two Phillips screws that hold the switch onto the lock Tilt out the white contact plate by releasing the odd clip Wipe off the old grease with a shop towel Add fresh Vaseline Replace the contact plate Screw it back on While you are there fasten the wires where they come out the back cover so they don't flex at the solder joints and snap off. You should disconnect the battery Negative but I never do.