I'll be back. Maybe...
This might be already discovered or completely useless, but you can charge a spark in the room before Imago Cocoon and run through the save room, charge in the next room (there is something with the floor around the 4th or 5th block after the door that stops your speed boost), and quickly jump up to the exit of the Ridley before Kraid shaft, launch a missile, and climb in and ballspark (I don't think there's enough time to do a normal shinespark) all the way up the shaft. The ball launcher's probably quicker, but this might be useful for 100%.
I have a VMU recorded on the european version of the game.
Lo!
I have a VMU recorded on the european version of the game.
Lo!
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