Seat post removal

[Lweekly]

Just got our 22SFX and are very happy with it. One problem though, is the seat posts. I’m afraid they’ve never been removed since 2014.
I’ve tried PB blaster between the post and the nylon insert, but they won’t budge.
Any ideas on how to get them loose?

 

[Remediation]

Oil filter wrench

 

[Lweekly]

Thanks. Actually, my oil filter wrench wouldn't go down that small, but I got them off finally.