Hi Derek, as you say the 125 invariably required some adjustment, but the 146 never.
The 146’s stall breakers (the only external wing appendage, and how many of today’s-aircraft have no VGs etc anywhere?) were removed for one test flight. Marketing thought it would reduce drag (marketing – aerodynamicists?) and the MD thought it would look better.
After a short flight of stall tests, the strips were nailed back on very quickly. The pilots debriefed marketing and the MD with some well-crafted words of advice!