For the sake of all things punctual, I'd say a time skip is well within reason. As writing up a surgery, construction of a ship, and construction of a new suit of armor would take an unreasonable amount of time.

So a short summary of the events that happened.

LeeRoy operated on Maxwell's ears, using the table's wires to repair the damage to the eardrums and crafted two small earbuds that would prevent loud noises from damaging his ears. And also to prevent his ears from bleeding, that too is important. LeeRoy left his right ear disfunctional, simply because he didn't want to go through a third surgery today.

After completing the repairs on Maxwell's ears, he and Maxwell got to work on the ship. Two weeks and numerous arguments later, the ship was actually repaired back to its original glory. 

With the remaining materials and a bit of reference from Maxwell, LeeRoy created a new and superior suit of armor to his old one. High quality and not stolen materials often leads to much higher quality equipment. The Mark VII suit is finished.

Now we're at the end of the skip, and LeeRoy has put on all but his helmet, he's about to test out the jetpack. 

Stepping out of the ship he slides the helmet onto his head and braces his feet against he ground, spacing them evenly apart. "Alright, lift off in three."

'This is a bad idea!'

"Two!"

'Stop! I'm afraid of heights!'

"One!" LeeRoy's face lit up with a bit of a sadistic smile, the pack on his back screamed to life and threw him into the air. The scientist's experiment had been a success, the improvements upon the design of his old jetpack had worked out splendid as he roared through the sky. "Woohoo!" And a little bit of child-like excitement went through him,