It does have blade stops. I'll get some pics and post them.A picture is worth a thousand words...
But, you are probably right. If the retaining mechanism needs stops contacting the corner of the edge, then missing corners are probably s problem.
But ... If it doesn't use blade stops, then it may accept a "shorter" (spine to edge) blade???
Think I'll also grab some of the Wedge Adapters on Etsy.