Brilliant you folk! Peterm cracked #1, Trevor 4/4 and Rusty - ..... and a frail for sale :-)) The poetry is really flowing (hmmmm!).
Chris, it wuz 'stand' (I can't bear/stand the pain) and 'stand fast' is defined in Chambers whereas 'stick fast' is not.
Here is my working (in the absence of AB):-
1. twin = ringer (short for dead ringer C.O.D); lead = precedence (Chambers def); “takes” gives “ring(lead)er” = RINGLEADER = ‘colloq.’ brains (Chambers Thes)
2. bears = stands; go without food = fast; STANDS FAST = remains unmoved (from Chambers def).
3. ends = g. e. s. t. = GEST or geste (obs = outmoded) = an exploit (Chambers def)
4. pit = a bed (inf) {Chambers and C.O.D. def}; anag (wild) of “narcissi” = “cairniss”; light = land; “catches” = pit + cairnis(land)s = PITCAIRN ISLANDS (in South Pacific)
5. dick = a detective (Chambers def); tom = a prostitute (Chambers def); see a detective following a prostitute = tom + dick; with = and; badger = harry; TOM, DICK, AND HARRY = anybody (Chambers def)