Sonatina II spikes and stability questions:

Does anybody have problems with the Sonatina II stock spikes? After installing them (my room is heavily carpetted), the speakers are not ver stable standing up (only 3 spikes per speaker). What you most of the owner out there are doing? Do you get bigger spikes? Are there any stands that will make these speakers stable? I rather use something that will make the speahers stance wider for stability that the longer spikes. Any suggestions are greatly absorbed. Thanks