Osciliscope Probe Readout Adapter

I recently bought a used Tektronics TDS320. But the original probes cost almost as much as the machine. So i picked up a couple of cheap 100MHz probes off ebay. Problem is that the p6109b probes that are recommended for use with the Oscilloscope have a special pin on the BNC connector that tells the scope its attenuation level (1, 10, 100x, etc) and the cheap Chinese probes obviously don't.
Looking into how the pin tells the scope its level (with some help from the EEVBlog forum) I found that