I think I've got about as far as I'm going to get with this so help with parsing for these please....
33d. A certain dog with no bone to pick may have lost it? (8,4) - CUPBOARD LOVE is the only thing that vaguely fits the letter pattern but I can't make sense of any of it so ...
26d. Cell is quiet - with others turning up a hindrance (8) - PLATELET (Cell) fits the letter pattern and definition but other than P for 'Quiet' I'm stumped.
41a. Spread under spread? (10) - TABLECLOTH - I know you 'Spread' a 'Tablecloth' but can it 'be' a 'Spread'? or is it wrong?