We need to fix our Shopify ecommerce store that uses GemPages as the page builder. Load times are currently poor and we need an expert who can first pinpoint the root cause(s), then implement the fixes. This is a two-phase engagement - diagnosis before any work begins. We are not looking for generic speed tips. We need someone who can audit our specific setup, explain what is causing the slowdown in plain language, and execute a fix with measurable results.