>15 years ago, I'd have stood there dumbfounded..and asked for help
to
>I understand the whole system well enough that I can understand what is wrong, form and test a hypothesis, and take action.
by
>I spent years upon years learning the mechanics of vehicles fairly intimately
Clearly you didn't "focus only on your strengths". You identified a weakness - no knowledge of the mechanics of vehicles, and acted to fix it.
You can do the same for fundraising, and it may take years to become a guru at it, but it doesn't take years to start having some success at it, just as with the mechanics of vehicles.