The old forums are being retired in favour of a more modern (free) community platform.
These forums will remain accessible as a read only archive for the time being.
I am guessing here, but couldn't a test be made on the possible local matched filelist by looking inside it for the TTH value of the required file, if exists use local otherwise carry on and d/l filelist.
Would it be possible to compare the users filelist with one already held in filelist directory - only download if different, otherwise use the info from the local filelist. Would save a lot of d/l b/w