12d. Much hinges on this person's hobby(11)???l??e?i?t.
Philatelist fits but I'm not sure
18d. One survives longer than some blackouts (7)????g??
20a. A way to rakeout-under the eaves initially (5)r???e
26a. Diversifies, finding limbs unworthy of consideration (8,3)??e?c??? ??t
Many thanks