Need a Properly Built PowerPoint Master Template

Description

Hi there,
We’re looking for a PowerPoint expert who specialises in building proper Master Templates – not just branded slide decks, but fully functioning templates that are set up correctly from a structural and formatting point of view.
We already have a template created for our brand (AgilityEco), but we’re finding that it hasn’t been built properly. It's proving too large to email – even before any content has been added – and some of the functionality doesn’t seem to be working as it should.
We’d like someone who can take a look, identify what’s gone wrong, and rebuild the template if necessary so that it’s lean, efficient, and user-friendly – while fully aligned with our brand guidelines.
If you have strong experience specifically with PowerPoint Master Templates, and can demonstrate examples of your work, we’d love to hear from you.