I had a failure in a Mk1 Air Ram just a few months out of warranty. Customer Service at GTECH patiently and courteously helped me with a solution which left me very happy. I now have the GTECH AirRam Mk2 due to favourable terms offered, and am looking forward to good performance from this updated mode. I see the new model has a feature that shuts down the machine should the roller be tangled and this is of epic significance as it's got to address a weak aspect of the design of the Mk1. Without this feature, the machine is much more likely to wear out a key nylon drive cog that is essential for the functioning of the machine. Thank you.