Here is another thing that could help, unfortunately I forgot where the website it but if you googled it , it should come up at the top. Someone here on the forums gave a website about clicker training. On that website is a free web video for clicker training for nail trimming!  She does it in one day I think.  mostly done with nice treats and getting the dog to touch the trimmer.  I suppose you could treat your Yorky,then turn on the Pedipaw for a sec and treat again, making sure they don't run away first. Treat them for not running away when you hold it in your hand and then when you turn it on and they don't run away.  Make it fun and interesting for them. One toe at a time 
