Hi Ian, Thank you for your feedback we appreciate you taking the time to leave it. We're always here and happy to help. Here's a few tips to have it working just as well for you as it does for everyone else.
1: It does have to be heavy to get the job done, thats part of the robust design. If your finding it to heavy to lift either fill it less or you can sweep/rake it out.
2: If the fronts getting blocked your not going fast enough to create enough inertia to move what your collecting back into the blade so the new stuff can enter. 10-15mph is a guide depending on your vehicle and terrain.
We hope this helps, please let us know how you get on and always feel free to give us a call as going over this on a phone or video call can be easier