Silca TY16, JMA LB-4, LOB-4 key blank source?

I'm trying to find a U.S. based source for some euro locks key blanks but having no luck so far. The key is slightly taller than a Yale though the Yale fits in, so it doesn't lift the 0-1 pins high enough. The lock is an LOB and uses the LOB4 and the apparent equivalents are the SILCA TY16 and the JMA LB-4. Has anyone run into this issure or can help? My usual distributor had no luck.