There has never been a Hurst included/revised fix from Hurst themselves.
A thread doesn't have to be recent to be relevant....
I posted this some 4 or 5 years ago here, and I'm sharing it now. The end-all fix it. Take a grinder with cut-off wheel to the lowest Hurst part that bolts to the trans. Slice a groove in it. This replicates the stock breather vent notch. I also scuffed the surfaces of all parts that mate and used RTV Silicone..being sure silicone doesn't fill the groove. I've ran this setup since '08 or '09 and 50k or so with ZERO fluid leaks or weeps.
Note: Previously, there was a fix prior to this idea I came up with that would drill and tap a hole for a hose barb.....and a hose up to the engine bay similar to axles or transfer cases. I prepped my truck for this while my trans was out, but ended up not using it because the slice mod worked so well. The pictures below show this.