While working on updating my entire brake system, I recently had my front drums measured for inside diameter. Passenger side measured 11.139 and the driver side measured 11.102. Is this out of spec? Is the factory 11.00? The guy who owned the shop said he hadn't used that tool in a long while and mentioned that his father had worked on the "old" drums back in the day. I mentioned arching shoes and he knew of no one in town that still does that. I'll be replacing the shoes and was wondering if I should get new drums as well. Thanks