Hi, two months ago I have changed my configuration from wetsuit/sidemoount to drysuit and bakcmount with twins to have the same configuration as my new group. Unfortunately, I have terrible problems with my trim on which I used to be proud The problem is like I have "heavy head" - head down, legs up. I have tried to put my tanks more down, also the v-weight tail is directed down, but this doesn't help at all. My fins are Hollis F1, slightly negative and there is definitely no problem with to much air in my legs. I have read a ton f articles about getting into trim with back mount and tried a lot of tips in my pool (only 1,5m deep), but ....nothing. Any advice please?