I have my AP 900 permanently mounted in my home observatory on a custom solid steel pier (purchased 2nd hand), the top of which has an opening which fits the AP Standard Pier Adapter for 900 Mounts. The walls of my observatory are a few inches too high for this mounting setup and currently clips precious degrees off my Southerly view. I only use the rig for imaging.
I would like to raise the mount by adding plates between a) the top of my steel pier and b) the AP 900 pier adapter.
I don't work well with metals, personally, beyond being able to drill a hole. I also don't have a convenient metal shop contact, but anyone know of any off-the-shelf parts I can use or DIY ideas to effectively raise the mount by 4-5 inches??
Here is a photo of the pier in my observatory with the AP 900 pier adapter attached: