Sash caps and guides

I believe your top guides are our 18-028. Normally the bottom guide would be the 17-003, however looking at your photo you might have a type of face guide. Look at our 67-014 or 67-028 to see if either of these match yours; if not you will need to use the screw on type like the 67-002 along with the 33-071 screw.

Thank you, that's kind of you to say! I was happy to help, of course. Please let me know if you needed anything else.