Ask ScooterDad: My sons mgp scooter is only 2 months old but the deck at the rear wheel is cracked from sliding along curbs is this normal. He uses it everyday.

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Yes, unfortunately some decks are not built with curb grinding in mind, so heavy use for a couple of months is not abnormally quick to grind through the dropouts. The new Phoenix Session decks were redesigned to combat this problem and I'm sure several other models were as well. Concrete is very hard on aluminum.