ah all these questions!!! So could a locating pin/lug once broken, make its way up to the top of a piston and sieze it SOLID? would it look like a spun ring damage? (LOTS OF KNOCKS OUT THE CROWN) i have to ask as im compltely in the dark here, looking at diagrams etc something isnt right with my motor, (well its been completly rebuilt now, so fingers crossed) and id like to try and work out whats caused it, the crank is fairly new, 3000kms on it now and cant understand a bearing going, its never run lean but has spun a ring in the past. MMMM something fishy is afoot and its not the local ho's down the street! senario's are this.

1. the pin/lug has gone because of bearing failer/ damage from past siezeure, Fallen into crank, sucked up into crown and siezed my enine.

2. bearing has gone pin snapped etc But piston has been damaged from a bit of old ring left in the crank case? not the lug / pin

3. Pin/Lug has broken, bearing failed as case/crank not correctly installed?

Lots of possabiltys, i have my own idea whats happened but ill save that for later, as if im right ill be getting outa 2 strokes all together and i dont wana be right...

only things certain here is Bearing has gone, Pin has snapped, and damge to the pistong crown? how is what id like to find out, ill have some pics of the parts but dont think itll help much.

Dose anyone have a picture of a pin/lug, at least i can tell from that if damage to the crown looks like it was a ring or bit of pin/lug.

Cheers all your help has been great, look forward to more of your thoughts on this one