Please can anyone advise on the easiest way to replace the main PCB on a Stannah 600 stairlift? My firmware is old (2016) and I have found a 2022 board to replace it. It doesn’t look too easy with the chair in place and I cannot see how the metal plate holding the PCB’s can be easily removed to access the board mounting pegs. I am familiar with the installation procedure having removed and replaced the whole thing to replace the stair carpet. Any advice appreciated.