KX125 - Just replaced piston, now has no compression

[RMrobbo]

you did attatch the piston to the conrod with the gudgeon pin right?
Did you replace the old gaskets with new ones?

[RMrobbo]

you did attatch the piston to the conrod with the gudgeon pin right?
Did you replace the old gaskets with new ones?

sorry didnt realise there was more than 1 page to this discussion and that you already had it sorted.
I once rebuilt my 91 kx with a wisco piston and it ran sweet for ages. Until some prick stole it.