I am thinking that if you build the fuse with rubber bands and install all the formers and top and bottom pieces, your problems might just go away. Be sure to lay out your top or bottom plans and build the fuse on top of the plans. If with all the parts installed using rubber bands and or masking tape, you should be pretty close to the plans. You may have to start glueing it all together from the front to the back. Good Luck, Dave