Decksavers! Way (too ) expensive but waaayy less expensive than shipping to Sweden for encoder repairs. Buy them once, get all the bitching and moaning about the outrageous price for a piece of molded plastic out of your system at that time…and then enjoy years of (relatively) worry-free synth transportation.
Also, if the an airline every tries to pull that shit where they try to make me put my carry-on into baggage at the last minute, the simple answer is: Batteries. “The bag contains LiPo batteries.”
'Nuff said. Anything with LiPo or LiOn , LiFe, etc batteries MUST go in the cabin.