this is all a bit coincidental as i too have a Mido Multifort and despite being from UK today i had superb Sushi with my daughter which included soft shell crap, salmon, scallops, prawns and flying fish caviar.
here's a pics of my 1964 Mido.

i must take it out of its vault and wear it more so i can take more pics as this is the only one i have of it. this full rotor auto has a freesprung balance which i think is a similar system to yours and difficult to regulate. it took my watchmaker about a week of his spare time to regulate it to within satisfactory levels.
i must admit that that put me off it a bit so its not been worn. time to change that.
thankyou for your great post of a great watch and my favourite food. it has given me incentive to sort my collection out and wear some of the pieces i havent worn in ages, especially the Mido multifort powerwind.
best
Graham