Here's a top tip for anyone who use Alcohol Inks:
If you find that the felt pad doesn't appear to be adhering to the Ink Applicator it is probably because you have used it a lot and fibres from the felt, over time, have built up in the hook Velcro. Take a pair of scissors and carefully run one arm through the Velcro, lifting out the fluff. Repeat this action in every direction until there are no more fibres. You should then find the applicator grips your felt pads tightly again!