You may want to experiment with cutting carbs even further. If anything, it should at least help the triglyceride level. Is dairy still in your diet as well? You could play around with that.
Are you getting enough antioxidants in your diet? I'd consider your veggies and stick largely to the ones that have the highest antioxidant levels. You could also consider adding tea and yerba mate and even some dark chocolate to up antioxidant levels. High antioxidant levels definitely equate to less LDL (and in particular VLDL).
Another thing you should DEFINITELY do is lower omega-6 fats as much as possible. The reason for this is because polyunsaturated fats oxidize easily and this is the last thing you want if you have a high level of LDL cholesterol.
I can't explain your results, and we can't consider any of these suggestions to be magic bullests, but they should be able to help you out in a noticable way.