wiper arm

[salva57@optonline.net]

Hi all, I've asked this before but received no reply so I' like to ask TR250 
owners or even TR4 as they might have the answer to my question. The wiper arms 
that came with my car are brushed stainless steel and 1/32 larger than 1/4" 
wide where the blade fits. I now have 2 sets of blade that I cannot use, the 
narrower ones, 1/32 wider that 3/16". Anyone has the right P/N or answer? 
Thanks in advance. 

Sal Vespertino
www.triumphowners.com/381