Azed - Last Few And Parsing Help Please

[JJ109]

26d Fabric mark? A firm’s upset with this (5) _ RACK
9d Wretched waste in the sea (4) _ LUE
25a Sliver of noisette consumed red? (6) NEA _ EN
(is "neaten" "red"!!!)

Obviously I can come up with answers to these, but I also need the parsing! Thankyou

This next one - I don't understand!
20 Noblewoman is bent, in grip of chronic fatigue (8) MAR _ HE _ E
Marchese is a nobleman (marchesa is the noblewoman). However I am pretty sure my crossers are correct. It parses as Marches(E) = noblewoman = arches (is bent) "in" M.E. (chronic fatigue). Therefore I am sure MARCHESE is correct, but can someone please confirm "marchese" can also be a noblewoman (I don't have Chambers!)

Many thanks

[JJ109]

Sorry, I forgot another

28d Dip in the loch section, low but rising? (4) SOO _
I want it to be "Soom" but I think I am inventing a word! = S(ection) + Moo (reversed)

[dannyk13]

Hi jj, Chambers gives Marchese as an Italian Marquess

[1ozzy]

28d //soom: A Scotish form of swim//
Dip in the loch
Cattle low and moo S(ection)

[dannyk13]

Chambers again- Soom, Scots form of swim

[JJ109]

Thanks both Danny and Ozzy - that is two confirmed!

[1ozzy]

Red, to put in order; tidy.

https://www.dictionary.com/browse/red

[JJ109]

Thanks Ozzy - that was one meaning of "red" that I was not aware of!

[1ozzy]

Me either ;-)

[JJ109]

With regards 9d The sea is the "BLUE" and wretched/depressed etc = blue. But where does the "waste" come in?

[JJ109]

He blew the money = he wasted the money. Could "wretched" be used as a sounds like indicator?.... but then it should be wasted rather than waste!

[iminoz]

9d is a triple definition. Cambers has 'blue' as 'to squander'

26d. BRACK, a flaw in cloth.
Anagram of 'fabric mark' - 'a firm'

[JJ109]

Many thanks Iminoz - finished with everyone's help!