I used to fly B737-200's and B707-320C in the late 70's on alternate days sometimes and later on B757/767 which were of course almost the same . Just had to remember which one had the step down into the cockpit.
Whilst on the B767 I kept my B737 rating current as a backup and the day after having been in the B737 simulator I got airborne in a B767 and had a momentary cause for concern when I trimmed manually and heard nothing whereas on the B737 the trim wheel clattered when it moved compared to silence on the B767.