Adjusting articulated microscope arm on PUK 5 welder

I have been extremely lucky to have received a PUK 5 welder for Christmas and after rearranging the workshop, I am now setting up the welder. The instructions are very minimal and thanks to youtube I have almost got it set up. However I am having such a problem getting the ball and socket joints on the microscopes articulated arm to move at all. Is there something I can do to loosen these up a bit?
Thanks
Mieke

1 Like

Silly me! I have found the solution…once again on youtube. So excited to try this baby out!!!