Getting a second attorney's read before filing — worth it or overkill?

Paid for a limited-scope second opinion from a different attorney shortly before filing, on top of the attorney handling my actual case, and want to share whether I think it was worth it, since it's a real added cost some people weigh. The second read caught one genuine, non-trivial gap my primary attorney's review hadn't flagged — a place where an exhibit's connection to a specific claim wasn't as clearly spelled out as it needed to be. That alone justified the cost for me, though I recognize this is a genuinely personal cost-benefit call, not something I'd say is necessary for everyone. If you're weighing this: a second read is probably most worth it for a genuinely complex or borderline case, or if you have some specific lingering uncertainty about a particular section, rather than as a routine step for every case regardless of how confident you and your primary attorney already are in the file.