Chainsaw Repair

If you look carefully at the up ended photo of the piston, you will see that the lowest section of the (exhaust side) piston skirt is half the thickness (by 0.5mm ) than the intake side of the skirt.

It slops about quite a bit in the bore and would most likely rattle the exhaust side of the piston skirt to pieces.

The biggest problem with the Solo 603 piston when considering a replacement from a different manufacturer is the 12mm wrist pin (piston pin) diameter.
Every 56mm piston seems to use either a 13mm or a 14mm wrist pin, and that seriously limits the potential piston options.