Sure I can give some details. Measurements were taken beforehand and the cushion comes in layers. Original look was kept intact
The cushion for
Part 1 was reshaped (head support) as it was pushing my head on the wrong spot.
Part 2 was extended about 7 cm and made more ergonomic (lower back support) it was the hardest part to fix. For
Part 3 and Part 5 the cushion was reshaped and replaced by a softer one (legs support).
Part 4 was made flat and placed about 1 cm higher (more comfortable to sit now).
I visited the store several times, tested the seat and asked for adjustments. Some things cannot be altered but some can. One needs to find a patient craftsman