Topband: 160m & DSL incompatibility

[Dave_G4GED]

Hi
 I know many top-banders monitor the Internet DX Clusters etc whilst operating on the band.
I wonder if anyone who's suffered from dropped DSL connections due to 160m RFI into the DSL modem has managed to find a fix?
My DSL line drops just running 100W on Topband. Other bands have no affect.
I've tried wrapping the in/out leads thro' ferrite cores with no improvement.
I think the DSL runs at freqs very close to 1.8Mhz so maybe a sharp notch or high pass filters are necessary?

Any thoughts?  Please reply to my personal email address as this subject may be considered off-topic. 
If there's sufficient interest I'll post a resume of suggestions received afterwards.
Mni tnx 73 de Dave G4GED
g4ged at arrl.net