Greetings,
Do you know if you have the "new" type of lever for the LRBHO? If you can search back in the archives, I posted photos showing the difference between them. Using the one that came with my lower (DDLES at the time), no matter how I tweeked it or the spring, I could never get consistent function. After installing the new one, 100%. Check into that with CQ10, they may be able to tell you which version your lower has. Good luck!
Regards, Jim