I have no idea HOW I missed it but apparently the carbon fibre props I bought on the DJI website only come with 2?! How silly... but I guess I didn't read enough... I thought $15 seemed low for these bad boys. Anyway, can I fly with 2 carbon and 2 plastic? Or is that going to mess up the flight stability or something? I guess I should just order two more but... just wondering. Thanks!