My older model Prindle's dolphin striker is a little loose as per manual specs. I tried to tighten it up and the stainless steel post is frozen. I used some sprays on it to loosen it but have had no success in getting it to move. Anybody have any suggestions on how to get it loose? Or should i worry about it at all??

I not sure what your striker looks like or how it adjusts, but nothing loosens stuff like heat. The torch kind. Careful to not burn the tramp, use a propane torch and warm it up a bit. It dosen't have to be red hot, just pretty darn hot. If heat won't do it forget it and replace it. If it's that corroded it might fail causing more expensive damage to you or your boat.

Mike