Rice is for eating ....
. I've had one that I used my wife's hair drier on after and during soaking with Tri-Flow oil.
Finally I had to result in using a plastic rod and a hammer to encourage the stuck parts to move. Once I got them to me it was just a bit more soaking and taping till the parts were free and moved easily.
I've got another one that is still soaking in oil. Tomorrow it will get heat. Then the fun begins. Either it cooperates or after stripping off all the useable bits I'm gonna scrap it out. No mercy, capitulate or die.
Well, I'm not really that blood thirsty ..... but this thing is in my way and it bugs me.
Joe