(Look at the chat)
Here is the answer. Let me know when you have had time to read it. I will delete it afterward.
" Hi!
We are working on solving the pendulum swing. The solution will not be with the device, due to inherent swing-effect in all the devices. We are thinking rather on adjusting the "environment" so to say. In a month or two our solution will have a prototype. It takes time. Regarding the weights. We can manufacture a special setup for you. If you would like to have heavier weights in one part. I have not tested 2 Lbs, so cant swear on it with my life.
Below you can see some setups. If we would not make a special setup. How does it work today? What is the lenght of your current device and how is it holding on to the skin?
31,70oz (900 gram) = 4,96 inches (126mm)
38,80 (1 100 gram) = 5,98 inches (152 mm)
45,85oz (1 300 gram) = 7 inches (178 mm)
The length is the total length of the device including all the weights."