Scotty Rod Holder Problem

Just bought 4 of the side mount version. I assembled the first one by re-positioning the holder to the side hole of the base. Problem is I cannot get it to come up to move! It's like it's glued in there. Tried WD-40 but it hasn't helped. Went in just fine, no idea why I can't get it up and out. Any suggestions or tricks? Thanks! :)

Got a response from Amazon.com. The owner of these holders said to spray it with WD-40. It WORKED! Let it soak a bit and out it came. All is good in the world once again. :)