Stihl MS660 Crankcase Repair

Someone had already tried to repair the crankcase, the pin for the chain-brake lever must've been loose, damaging crankcase, so they taped it out & installed an insert, with a screw used instead of the hardened pin.
The screw had broken off and the customer had attempted to drill it out...I decided to grind it out, build it back up with magnesium & re-drill for pin to be installed.

Damaged chain brake pin mount.

Also had very worn top cover mount.

I had ground out the insert & built back up with magnesium.

View from other side.

Built up before drilling.

Cover mount ground down, built back up, reshaped, drilled & re-taped.

Brake lever pin mount before drilling for pin.

Drilled and pin installed.