Rocketeer Jetpack - Modified

Mod 3/19: After printing the center full scale I modified the center vent a bit to be tallest in the middle and then taper down to the sides a bit better. Still looked good either way, just nit picking now.

After printing dorkle's Rocketeer Jetpack I got to work making modifications to the files.

Mods:
1. The main center vent has been thickened so its stronger, the original broke almost immediately. I have included both the whole center piece with the modified vent and a split version.

2. The middle rocket housing and thruster has been modified to slide together with a connector for superior gluing surface and strength.

3. I made a connector piece to go in between the middle and top rocket housing for superior gluing surface, alignment and strength. Unlike the middle to bottom connector which I added permanently into the middle piece, I did this connector separate so the top and middle piece could be printed with less supports.

4. I modified the bottom flaps to sit flat