Anyone else have a hard time finding a battery, or know where to get one online? The yt12a-bs from our scooters are 4inches tall, all the ones I can find are about a half inch or so too tall. Would be nice to find a 11 or better ah rating. I found one that had 8AH, but with the difficulty starting in hot weather, I'm bit hesitant to get it. The dealer is 40 miles away, so...I'd rather not make the drive if I can avoid it.