This needs repeating. Get to level 5 thrusters at least once before pinning the blueprint, and leaving. Afterwards you can remote engineer any ship's thrusters to level 5, but no experimentals can be applied remotely.Also bear in mind that remote engineering doesn't count for ranking up,
However, an update will come, and all your pinned bleuprints will disappear, and you'll have to fly back to pin again.
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