Release agent is really anything that will not adhere, or stop anything adhering to it, there are propriety ' release agents' used in moulding processes, for minor jobs you can use, wax polish / candle / vaseline
any of these would do for this job on the stabs.
Walk thru -
Very lightly sand the mating edge of the stab ( just to key it slightly )
Apply sellotape all around right to the edge of the stab
Apply some 'release agent' to the fuse slightly larger in area where the stab meets the fuse
Apply a little 'release agent' to the CF rod around the area where in protrudes from the fuse, and the front locating GF pin ( just to ensure that if the mix drips onto the rods it will come apart)
Mix up some 1hr/30min epoxy with some micro-balloons, mix till you get a very stiff mix ( will not fall off the mixing stick)
Apply a bead of the mix all around the edge of the stab
Slide the stab on and position
Let cure till it goes like ' very hard rubber '
Slide stab off, using a new model blade carefully cut excess off till flush with the tape, remove tape, if you want to be really fussy you can finish off flush, but really you only have the thickness of the tape and it hardly shows.

Tony