Anyone know if the Stihl Kombisystem will take other manufacturer's attachments? Got a TroyBuilt 4 cycle weedeater that takes attachments and I'm not impressed with it. When it dies, I'll probably go wth the Stihl Kombi. I've got the tiller attachment now but I need to get an edger attachment. Rather than throwing good money after bad, I was wondering if I could get either the Stihl edger attachment and use it on the TroyBuilt or get the Ryobi one that "fits all" and use it on the Stihl in the future.