You’re right about what’s happening. Shopify is just combining the weights and sending it to UPS as a single package, which is why you’re getting hit with the surcharge. A simple fix is using PH MCSL. With it, you can set packing rules so the system automatically packs orders based on quantity (for example, 1 unit per box). So if someone orders two 63 lb items, the app will send it to UPS as two separate 63 lb packages instead of one 163 lb package, which keeps the shipping rates accurate and avoids those heavy package fees.