No worries
I've learnt most people go straight for looking for a leak on the bigger pipes (fmic and hoses). But the little vacuum lines are brittle over time and can crack and leak, and cause just as many headaches hunting down.
Oh, and if you ever get the chance, give your idle control valve a good clean with carby cleaner too.
And, lastly, ensure nothing 'rubs' against your fmic, as this can cause a "hard to find" leak also.