- Fixed new 2 engine part recipe not being assigned to the magazine.

- Made the baseline recipe cost 1 propane instead of .5 and doubled other costs and result accordingly since fractional propane does not work even though it displays.

- Rebalanced for 41.78 propane.
- Added screwdriver requirement.
- Updated welding mask requirement to allow other masks.
- Added recipe variants to craft 10 and 20 parts at once (and save a bunch of time).

- Made recipe take 4 screws instead of 16.
- Renamed the script/lua files to avoid accidental overriding (they had generic names).

You'll never believe this, but I added one folder to fix the Rip Clothing item disappearing from context menus. Apparently PZ requires a folder for items/recipes to be in (or one of the two) to determine category, and it silently breaks things (including the context menu for any item) if a single one doesn't have it - even though the recipe works fine and is accessible. Why it has no code to handle "doesn't have a category" is beyond me, but it's fixed.