Saturday Times

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I'm finding this week's fiendishly difficult. Can someone please help me with a few?
29a Part of spring quietly threaded through a short needle (5) - - - - L
56a Russian river's long: current certainly eddies (7) - - N - S - Y
43d Sticks holding on end of garden gnome (3,4) B - - - - - -S
Thansk a lot.

[Lie-in King]

29a April - p (quietly) (in) 'a ril(e)' (a needle)
56a Yenisey - Yen (long) + i (current) + anag 'yes'
43d Big Ears (Noddy's gnomish friend) - 'Bears' (sticks) (holding) i (one) + g(arden)

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Thanks a lot Lie-in-King. Should have titled it Times Jumbo, but my brain must be dying.