A mate ecently explained his process to me - he puts a long 4mm Allen key in the bolt head and heats the key with a butane torch. The heat transfers to the bolt and softens the threadlock and the bolts come out easily. I’ve not tried it myself yet but it sounds good, and he reckons it works well.
Joseph or George suggested we try this since they changed the loctite compound - have yet to try. Have found you go through less drill bits thinif you drill really slowly with a lot of pressure on. (Even the supplied drill bits work when you do this but you need one per side)
Usually is, if it come out easily, then it was installed incorrectly (bolt need medium strength Loctite applied).