So, first, get all that rust off of both blades. Scrap it off with a single edge razor blade, then polish with 000 steel wool and WD40. If not, the rust will imbed in your strop and it will scratch the bevel and chip the edge. Rust is very abrasive. Once in a strop, you may never get it all out.
Second do not lap on steel, pick up a glass tile, a 3x12 inch glass tile sells for 3-5 dollars and can be lapped flat easily with a sheet of 220. Once lapped flat it will hold lapping film very well.
A 1k stone will make your life so much easier, you will need to do some edge correction to both razors if you want to make them optimal. You can buy a good King 1k for $20. You can make the jump from 1k to 1um easily.
The Ern needs the heel correction badly. You are honing on the stabilizer and keeping the heel off the stone. This is an advanced honing technique and may not be for you. All the massive spine wear is probably accountable to the mis- shaped heel and riding on the stabilizer. Past honers have tried to force the heel on the stone and needlessly ground the spine with excess pressure.
Electrical tape and heel correction would have prevented all that damage, it will still prevent further damage to the spine.
Third both razors would benefit from a slight smile matching the spine, probably had one originally and can easily be re-profiled to a smiling edge, but this also is an advanced procedure and you will need a low grit aggressive stone, preferably a diamond plate or diamond file.
Once reprofiled, a rolling X stroke will hone them just fine. Here is a post on heel correction, (
How to Correct a Heel) and another on reprofiling a smiling blade, (
Make me Smile)