Hi Karen - and welcome

!
While it does seem that, for some reason, yorkies can be particularly tough to house train based on what we see here at YT, I really do feel that you're 95% of the way there anyway, bc you've already dealt w/ 2 puppies in your life - so you got this!
You may like this thread too, btw:
http://www.yorkietalk.com/forums/gen...ent-guide.html