I used to own T-230 string trimmers from Shindaiwa. I had also bought the parts needed to mount a brushcutter blade on them. But I now have a T-231 string trimmer and would like to use my blade on it, but I can't figure out how to mount it? Can anyone help? A photo or two might help. Thanks in advance. P.S. I have an e-mail into Shindaiwa, but they can take quite a while to reply (if they reply at all). If I have to, I'll take a trip to the dealer, but thought maybe someone here could clear it up for me and save me the trip. Thanks again.