I'm sure a lot of people are wondering how to pick up the missing parts.
First, find the level where you pick up less parts
Second, complete the current play level (if you don't mind replay, go directly to the next step)
In the Continue game interface, restart the level that picks up fewer parts (select the minimum difficulty, which does not affect anything)
You'll find that your collection progress has been zeroed, but don't worry, follow the walkthrough to collect all parts and complete the task (you can exit the task directly after picking up the missing part).
Now, restart your latest level, go into the game, press
to open the Jack upgrade interface, don't care about the other, press
to reassign parts, and now the number of parts you hold should be correct