I am renovating our kitchen and I am pulling up the old lino which is glued to masonite. My problem is the nails they used to nail the masonite down with. They are the ridged ones used for masonite etc. and I cant pull them out of the cypress floor , the heads pull through the hammer or if they come out they damage the timber. Does any one have any hints on how to get them out. Thanks for your help.