Lately - the shutter has been hit or miss. Often closing part way and stopping. I have to use the serial communication to set @PWS,10000 then @CLS It seems to hit PRS0 on it's own to soon>so I've delt with this. Last night it didn't close and today it's really wacked. I click OPEN and it tried to close. I hit close and it just makes a jump. I rebooted all - no help. I used NINA, DeviceHub and Arduino serial commands. (btw WHAT IS THE OPEN COMMEND VIA SERIAL? ) like @CLS to close. I want to send open and can't seem to get it to go.