Looks like your razor is of the type that utilizes the cutouts in the original Valet blade to secure it (the cutouts spell out the word Valet). Since the cutouts are necessary, a de-spined Gem blade is never going to work. Your only option is an original Valet blade, or the special Feather blades that fit the Valet razors.
Originally Posted by willyb
The de-spined Gem blades only work with certain Valet models, specifically ones in which the blade slides into a holder from the side, like the model pictured in the 2nd post in this thread.
~~JOHN~~*Founding member of ALPHA Team*