Does seem like it's crashing if heat gets it into clear solution and then it falls. I don't use EO but Mast E at 18% BB and 1-2% BA works at 200mg/ml. You are at 250mg/ml. See if BB increase can salvage.
For what it's worth I see a lot of guys getting fancy going for non-standard higher concentrations or blends and messing stuff up. As a rule it seems to be the inexperienced ones. Another 50mg/ml is meaningless if you have to dump your batch. Just go with a standard recipe that everyone knows holds perfectly, hot plate w/ stirrer, preferably bottle top filter to media bottle...voila.
Personally I don’t find that big of a difference in solubility with eo if your already using mct as a carrier. I’ve begun to use eo only in brews that I feel will have considerable injection pain since it has a bit of an anesthetizing effect. But I do agree with you in these higher compound brews being a bit more difficult at times. All of my recipes are the old standard concentrations except for Deca. I’ve started brewing Deca at 300
