I'm going to have to pass on the Fullerton pumpkin launch this year as we'll be in Japan when it's being held. Thus no major need to finish the larger new trebuchet, and the parts are taking up space in the shed/workshop. I don't have room to store the completed treb, at least until I get rid of the ones that are in the corner of the yard my wife allows me to use.

I will take your extra trebuchets if you'll rent a truck  
 
IMO, you oughta use old trebuchets as material for the new ones, then you won't have too many.  Of course, if a siege happens and you have no trebuchets that could be embarrassing . . .