Hey print out 2 coupons, buy them separately since the coupon is only good for one item, and get a Warranty on one of the motors. They do not ask for a serial number when you register for the warranty so both of your motors will be covered. Blow it up, throw a rod, grenade a flywheel, or over hose a jet. It doesn't matter you can take it back and get a new one. It just needs to look stockish when you return it.