Mine is kind of stiff too when telescoping.
Are they all like that? Can't say.
You might have luck using a dry graphite lubricant. I wouldn't try any oil or grease there.
Just my $0.02 worth.
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Six speed 2000 Boxster S
Arctic Silver on Metropol Blue | LN Dual Row IMSR | Arctic Silver console, spoiler frame & bumperettes | Crios mod | Technobrace | RoboTop module & modified convertible top relay for one-touch roof operation
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