Hi Puzzler,
There are a lot of crossword (and Lovatts) fans here at A2K, so post any time you get stuck and we'll do our best to assist you.
Have you tried
www.onelook.com before?
It gives you a wide variety of online reference material to choose from, and the 'Wildcard Pattern' function can be invaluable for really difficult clues.
Colossus Stinker
For 202D. Centre of attraction, I have 'Cynosure'
Colossus Baffler
For 'Peace group', I have 'CND'
Abbreviation for (in the UK) Campaign for Nuclear Disarmament
Hope this helps.
Good luck in the competitions Puzzler!
Hope to hear from you again soon.
Regards, Butterfly