Hello Tonnesen - thank you for your answer and forwarding of Jim Power's e-mail. I will attempt "tightening" of the panels in few days.
I will also test my amplifier - need to borrow something more powerful. I am using VAC Renaissance 70/70 so our problem could be related to not sufficient power supply.
I will also test my amplifier - need to borrow something more powerful. I am using VAC Renaissance 70/70 so our problem could be related to not sufficient power supply.