Canvas frame frozen

[jbiddle]

The back bimany frame for my 1997 250DA adjusts by pulling the back tubes up to a higher position, moving the canvas forward allowing for winshield and side, and rear cavans installation. One of the tubes is frozen - it won't move at all. I've tried WD40 and another product - CRC something, with no luck. I've seen PB Blaster recommended. Does anyone have any other tricks to getting this thing loose?
Thanks

 

[mwph]

You are on the right track. I took the pole off of the boat, hung it upside down and sprayed it and let it sit for an hour. WD40 worked for me 2 years ago, but I was recently introduced to PB Blaster. I'll never be without it (PB) again.

 

[deerock]

liquid wrench may help

 

[Westie]

I had the same issue with all four poles on the boat I just bought. Tried everything and couldn't get them to move. Finally ended up just making 4 more post myself.