Loosening the endpin

[Patrick Wasserman]

On my Kolstein Fendt loosening the endpin has started to become very difficult. I change the height several times a day, so it's not like it's impossible, but it is more difficult than it should be. How should I go about making this a little looser, could I extend it all the way out then spray a little WD-40 on it? I feel like that would be a bad idea in many ways so I've come here to ask.

Thanks,
Patrick W.