I got the left flap trimmed, mounted and operating electrically with the right one. I spent quite a bit of time adjusting the pushrod lengths so the flaps go down and up pretty close to the right amount. I'm really happy with the result.
L flap top skin is trimmed to match the right one
Flap rod attach hardware, modified like the right one.
L flap rod hole in the fuslage. It's a slightly different shape from the right one.