I've sent them an email now as well. I have a 90/4 Pro easel that has been in storage for 10 years. The gas spring isn't working properly to keep the easel open. Also, and more troubling, is that the metal rods attached to the two horizontal beams/blades are coming off with one already off. It seems they were just glued on and the glue fails after some time.
Let's see how Dunco responds. The gas spring should be a straight forward swap, but I'm less certain about the metal rods as they'd need cleaning to remove the old glue, then the proper type of glue (whatever that may be) and then to be aligned correctly.
Anyone can say what the purpose of those metal rods are? Stability?