Hi Verso,
27D. Tourist = Sightseer
fortune teller = seer
vision = sight
'seer' after 'sight'
31D. Hot and bothered = Flustered
'let us' + 'Fred' is an anagram of 'flustered'
1A. Old car = Rattletrap
noisily shake = rattle
back part = trap ('part' in reverse)
2D. Demonstration = Trial Run
flee = run
court hearing = trial
'run' after 'trial'
48A. Paraffin = Kerosene
'Rose keen' is an anagram of 'kerosene'
Hope this helps Verso, post again if you get stuck.
Regards, Butterfly