I would check it for you but i am out of bloom. I have all the others though. If you can not spend much on a meter, I recommend the Hana primo. I bought it with the intention that it would only make it threw one grow and I am now on my second with it. I got it for 17$, more than worth it even if it only lasts one or two grows.
If you want I will check the ppm on the other nutes you use minus the bloom. I bet doubling micro would make up for the test. I bet micro is just as strong as bloom. Let me know and I will test it for you so you can see where you are at.
Having experience with those nutes, I can tell you, you are right and most def burning them / lockout.
edit: I would not wait till next change, as soon as possible water that mix down. It is so strong for your setup.