Are all piston aircraft assymetric?

If you look closely from the spinner towards the windshield, you can see some engines are pointed at a slight angle. A Piper Turbo Arrow comes to mind. It has a rudder trim too to tune at cruise.

Found a picture of the rudder of the Saab Safir

Peter wrote:

also my point stands. 60 years later??

Rutan did an experiment in designing a twin engine experimental aircraft to see if it was possible to make it faster, safer, longer range, use less fuel and so on than a traditional contemporary design. He designed it, built it, and flew it, and proved that it was indeed possible. The aircraft is completely asymmetric in shape, yet the aerodynamics makes it much more symmetric than any traditional twin. A work of art IMO

No, the DR1050 has no wing tanks.

When our Jodel DR1050 needed the LH seat frame welded, I flew solo from the RH seat.
I had flown hundreds of hours solo from LH, and with a pax in the RH seat, and there was no noticeable handling change. The aircraft was well balanced.
Aircraft empty mass is 410kg, fuel tanks are fore and aft in fuselage, and my mass about 100kg.
Solo from the RH seat, I needed a bit of left aileron at all speeds. As speed reduced, it became impossible to prevent a right, descending turn. Wheeler landings were essential.
I flew a number of trips before the seat came back.
This did not apply to other DR1050s, from web responses.

Peter wrote:

also my point stands. 60 years later??

Well, aerodynamics don’t change over the ages and the basic theories work great up to 95% accuracy. Usually, if a computer get’s results deviating more than 10% from your hand calculations, you better throw away your computer results. Or as has been said by people much smarter than me: “A computer can make a good engineer become a great engineer and make a crappy engineer dangerous.”

Baron 58P – number manufactured – 494.
Boomerang – number manufactured – 1