All done but can't see how these clues work....there's an extra letter in each clue ....I have done the maths so don't really need them but...
24d Trying experience before dread treatment. ORDEAL
10d Chemical increasing muscle mass found trending into fashion CREATINE...i can see create for fashion ...
24d - 'dead' indicates an archaic word for 'before' (OR) and DEAL = treatment.
10d 'found' = CREATE 't[r]ending' = nursing/taking in IN = 'into fashion'