Hello Big,
I have a Cajun accordion manufactured by G. Miller in C. When I push the bellows without pressing any key, it will fall almost without resistance so for me it leaks.
I worked with your Perrodin two step method 3, I saw the work the bellows and with my accordion I not complete the measures do from lack of air.
thank you for your answer
Pierre From France

Ah, mais ça perde de l'aire. Il faut l'arranger pour le jouer bien. Il a quelche un que peut l'arranger la?