Yup the mark7 finally broke, Its not the first helmet I've had to repair but it is my first complete paint job that is. I'll post my progress and steps towards the repair here. More than likely this build will be retired after the repair but I wanna fix it regardless.
Step one was to remove all the interior this includes all the Velcro, foam pads, visor, electronics if you have them (pretty much anything you don't want dirty). I plan on sanding the seams inside so I have a clean surface to plastic weld the cracks back together. I then use some masking tape to tape the cracks back together from the outside as I prepare to weld. I don't know if I'm going to need to sand down the outside as well yet but that may be needed.