Where to get spikes for Apogee Cephus 6's? Help

Gidday all. I bought some Apogee Cephus 6 from a gent and he can't seem to find the spikes for them. The owners manual states the the two front spikes are longer than the two spikes in the back, allowing you to tilt the speaker back some. In fact, the speakers naturally lean forward with no spikes used. Assuming I never get the spikes from the original owner, where can I get spikes for my speakers? Appreciate any advice, Jeff