You need a crosscut with big teeth and lots of set to cut wet spongy 
stock of any kind.
   I filed one from a 6 point rip saw just for this purpose.

Crosscut teeth that big in regular dry wood?    It'll kill ya!! Godzilla 
couldn't push that saw through dry wood.

But wet or green wood needs -big- teeth to clear the swarf, and it just 
wolfs.

Keyhole saws usually cut on the push stroke. Really effective, but man 
you have to be super good with your stroke to keep from folding the poor 
blade up like an accordion.
   I refile mine to cut on the pull instead. Takes a little longer but 
it works.

The answer is always more tools........ lol
   yours scott

-- 
*******************************
    Scott Grandstaff
    Box 409 Happy Camp, Ca  96039
    scottg@s...
    http://www.snowcrest.net/kitty/sgrandstaff/
    http://www.snowcrest.net/kitty/hpages/index.html