Car Explodes when starting on an incline.

Apologies for posting this on the FB page, completely missed that this was here. I've noticed certain vehicles (seems to be ones with more pieces, not 100% positive it is the issue) will explode on round start on the levels where you start on an incline. I've posted a video to Youtube showing this: https://www.youtube.com/watch?v=l5u6NHBAQ8E  This happens regardless of what you set the rockets to.