I took my engine apart to change bearings and clean. I put it all back together and it was incredibly stiff. Turns out the con rod is seized on the pin that holds it in the piston. I popped the rings out but can not get the pin out of the assembly. It's been sitting in PB Blaster for a few hours and still no luck. Any thoughts?

I can post a pic later, but it would be of the con rod inside the piston with the pin sticking 1/4 of the way out of the assembly. I do not have a complete workshop (i.e. vice) just a few hand tools (and a dremel...[>:])

It's an OS 46AX. I don't know what the parts are made of (is there a sleeve?)