Robocam posted instructions and photos on how to do it
https://endless-sphere.com/forums/viewtopic.php?f=28&t=69867&p=1283830&hilit=hall#p1283830
Quote: "If you email Paco, he'll probably give them to you for free (plus shipping). He did for me.
viewtopic.php?f=28&t=69867&p=1224666#p1224666
viewtopic.php?f=28&t=69867&hilit=radiator&start=1275#p1209434
viewtopic.php?f=28&t=69867&hilit=radiator&start=1350#p1223294"