Spent sometime on it tonight, I've found the hole that secures the right side of the latch to the wiper motor bracket, the hole is about a quarter in diameter therefore when you attempt to screw the latch to the bracket through the clamshell it only holds it the clamshell and can't secure it the the wiper motor bracket.
I've constructed a piece of metal that spans across the wiper motor bracket to secure the clamshell to the wiper motor bracket. If you don't that clamshell will bounce and vibrate. It's the only place in the middle of the clamshell that is secured to an area to hold it down.
Weird design considering that is roughly a 3ft diameter in the middle of the clamshell that has no support.