First off, nice work being able to open up HB 10s n 9s no problem. Definitely a problem for a lot of guys, and to be there means you are doing great work.
It sounds like you have the opposite problem of what some guys have; that is, you can open up the hotter girls but not the uglier girls. It is a common problem for, in fact, the opposite (a guy can open up ugly girls but not hotter ones).
What will help you to start is identifying your goal(s) for the evening. Are you going out to have a good time, come what may? Are you going strictly to pickup the hottest girls in a bar/club? There are many other reasons, but the idea here is to identify your wants, that way your thoughts and actions are congruent with your wants for the night. Let us assume, for now, that you are going for the second reason.
By deciding to go out strictly to pickup hotter women, what you do then is subconciously disqualify girls who you do not deem "HB9 or HB10". This might be why you may think of them as lower than you, and their talking might frustrate you to a degree.
You are a human being. They are a human being. PUA's left girls better than when they found them.
It will help you to approach more 5s,6s,7s,8s because: 1. it will get you comfortable with them, 2. When you become good at gaming them, it will naturally get easier to game the 9s n 10s. 3. When you game them well, they will grant you entry in the set with the 9s n 10s. For girls, it is great social proof when another girl lets a man into the set. It shows he has something to offer, and is fun and a man who is interesting.
There is a word that catches my eye in your post. When describing your experience talking to the hotter girls, you use the word "force". By talking to girls who arent 9s or 10s, you will naturally become more comfortable talking to all girls, and will find yourself the center of more sets.
DO NOT CONFUSE WHAT I AM TYPING. Great advice I read here is that in order to grow as a PUA you must always go for the hottest, best girls. This is true. BUT you have to develop all the skills required to have succes with those girls. For most, that incldues being able to seduce their friends in a manner that they grant you access to the hottest girl.
Overall, have a great time when you go out. When you enjoy being around your friends, girls dig the vibe you send, and will pick up on it. Girls will even hit on you

, and when you are having fun, you can go out and talk to any girl knowing you will have fun with them. When you develop that mentality, talking to all girls will become more fun (and most importantly to you, easier).
Enjoy, and cant wait to read your next lay report or number close report!