I propose to do something unbelievable:
Yes, in our time of millions of Presidents, Covid Specialists, highly educared Influencers and so on, this must be hard - but try to trust him. He seems to be a pro in Physics, because he understands, that two things can not be in the same place at the same time.
The problem is the frame for the foot rests - you can not flip the shifter, because:
- the crank arm has a certain form - it's not straight
- the shifting pin can not be unscrewed to be placed on the other side
- the shaft would have to pass (above mentioned Physics) through the subframe of the footrest
The first two points might be fixed with different parts, but the third is the killer...