How to clean OT trigs

hi all, just wondering how to go about giving the Octatrack’s trig keys a clean on the part where it presses downwards and connects.

i already opened the case to have a look inside (omg … awesome!) … the part where i would like to clean is on a board held in place, parallel 1.5cm away from the faceboard.

took the trig key off and it is all very awesome … but the trig key cover connects to what seems to be an enclosed trig device … i would like to somehow clean inside that trig enclosure, where the plastic trig part connects to the trig target.