I have a mini excavator - Volvo EC25 and there is a small crack on the corner of the boom. It runs approximately 1 along the side and 1 across the back. It is just above a thumb clevis plate that was welded on a few years back. My intent is to remove the paint, V-groove over the crack, drill holes at terminations of the crack and weld with 7018 rods. Am I overlooking anything? Should/can I grind the weld flat?