Welcome to LimeWire!
What's more frustrating is the 98% complete file. It is like playing a poker machine. As the frustration level rises so does the addiction.
I tried Poisoned and xNap. Both seem to be more reliable and faster. I'm back here though because the last upgrade to xNap stuffed up all my daemons. Guess i'll just have to wait for the next upgrade, they seem to come pretty frequently so shouldn't be long.
As for your problem, keep searching to nudge LimeWire to possibly find new sources. Keep in mind your specific files may no longer exist. Sometimes people only pop in for a try, don't like LimeWire (because it sucks) and move on. Also they rename or move their files so they are no longer available for download.
It's a crazy mixed up world out there and nothing is for free. If you don't pay in cash then you pay in wasted time and agravation.
A simple suggestion for you is to post in the General Forums if you wish to introduce/push a client which does not currently have a specific forum here.