Sorry if this is an old story being repeated; if so, thanks for any links you can provide that already answer it.

Got a really nice Dubl Duck on eBay, shaved great, but had a bit of staining and a spot of rust. Followed Lynn's video, polished it up with a very slow setting on the dremel (yes, I've seen threads about Dremel Damage), and that took care of the staining and spot nicely.

Problem is that the blade no longer sharpens. After a little bit of testing, I discovered that the blade is ever so slightly curved -- if you gently hold one side of it flat on the stone, it can "roll" lengthwise a tiny bit. Other side, of course, opposite effect of the tip and base touching, not quite the middle enough to hone it. The curve is very slight, not even visible if you sight down along the edge.

So, question to the StraightRazorPlace Hive Mind Experts -- how to fix? Is there a recommended procedure, or someone to send it to who has good fixin' technique?

Thanks!