Curious- Does anyone adapt baking recipes for high altitude in Rossland?

I'm interested in adaptations, if any, for baking in town. Maybe I have a crappy oven but I find baking here always happens quicker then expected. Share your thought please before I over cook another batch of banana chocolate chip muffins-good thing the kids aren't picky ;)

Happy Holidays and baking!

Have you checked the temperature of your oven? Might be the culprit.