Hi Samuel! The sensations you described while using the Glycerin GTS 20 can certainly be related to this being your first pair of shoes with the GuideRail support system and getting used to a new shoe in general. We recommend trying them out for a few more runs, and if you are still experiencing the same issues, you can always take advantage of our Run Happy Promise to find the best fit for you. The Run Happy Promise allows you to try our gear out for your normal runs and walks, inside or outside. If they do not work, we offer free pre-paid return labels on orders to send them back within 90 days for worn items, and 1 year for unworn items. Even if you get them dirty or lose the box we can still take them back with our free labels via FedEx or USPS for a full refund.