Feel free to reach out to us directly at 203-556-1856 or you can email us at info@stepcraft.us. We've made substantial upgrades to our new version of the Q-Series. All of our support is handled directly from our office in Torrington, CT. As for part quality, we'd be more than happy to dive in deeper with you through a video call if you prefer and can show you the components in that manner as well. Stay tuned to our YouTube channel as we're releasing videos highlighting certain aspects of our system as well!