Yes, the main gear track is wider in the 12 than the 10.

On 5/23/2017 6:47 PM, Dave Nadler wrote:
On Tuesday, May 23, 2017 at 8:18:42 PM UTC-4, Duster wrote:
I thought I read where the S-12 wheelbase was wider than the S-10,
so the rockinrollin might be less of an issue.
I don't know, but also span is bigger....

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Dan, 5J