Okay, an update on my situation regarding Permobil ceasing to supply PG8 joysticks for older models of their power wheelchairs. We have been talking to Permobil and have made it quite clear that they are responsible for maintaining wheelchairs they have sold, and that means supplying spare parts. To cut a long story short they have now found some joysticks that will work on wheelchairs such as the chairman. I believe these are not actually PG8 joysticks, but are compatible with the wheelchair. I am having this replaced under warranty since it is any of few weeks since the last one was replaced. An engineer from them Permobil is visiting me on 24 December so I will update this information I came, hopefully with good news that everything is working and you will be able to obtain spare parts if needed, fingers crossed