Yeah, a brushing or bearing may of fallen out. Check under the motor to see if there is like a holder with a brushing in the middle.
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Xmods Civic:
Custom 36t 28gauge ball bearing neo mag motor, Soft treaded tires, 5 spoke rims, AWD, Hard springs in the back soft in the front, lowered BC's way, 6 cell with I-C3s, and one awsome drifter/driver/racer.