I found it a real beast today,
Not sure about parsing my 11ac, nor sure I have the right answer to 22ac but
24 ac the answer is a gas, The first three letters are a sort of cows with the first letter missing
14 dn as it says it is a town: first and last three letters are a type of thread with an anagram of helps in the middle
17 dn is a word for a layer: reading upwards the first two letters are from the greek alphabet then a cake (though I would not call it a “cake”)