Deciding to finally tackle a very seized seat pan height adjuster on a MB seat. To make matters worse the bolts from the handle base had already been sheared off, and the release button on the handle itself was seized solid inside. Well at least now the bolts have been drilled out, the mechanism has been dismantled and greased, and the seat pan can now be moved up and down on its sliders. But the bl**dy release button is still stuck inside the height adjusting handle. Looks like a few days soaked in WD40 is in order, as frustratingly i cannot get enough leverage inside the opposite end to help it out.