I only open the , vent closed, domes once a day to clean them with ISO. Then they are immedietly replaced.
I do this daily till i see roots, nornally 5-7 days later.
Your set up looks fine, clone success is 80% mother health/age and 20% good practises and standards....and 100% enviroment. Needs to be active condensation in those domes
Cuts shouldnt need tricks, internet remdies or rockymountian oyster advice.
KIS is all you need.
And just sticking the stems into the rockwoll is exactly how i do it. Although i squeeze a sizable amount of liquid out before i stick em.(also azos and mycos...go a long way)