After verifying you've done what vstech and Govert suggested, if it still doesn't want to drop out I would suggest you losen (don't remove) the motor mount bolts. Place some boards somewhere on the front of the motor that will allow you to jack up on the front of the motor to tilt it down in the back. This will allow you a bit more room to manuver things around.

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You can't always get what you want, but if you try sometime you just might find you get what you need.