You are probably so used to the Jive that you're having trouble "unlearning" the movements which you know make a Jive do tricks - but which don't make a .85 do tricks. It can be really difficult, but when you are next out flying spend a moment clearing your mind and feel that you are starting anew - and when inputs don't work, abandon them and try a different technique, rather than the same techniques but harder. Play with all the variables - timing of input, strength of input, attitude of kite, speed of movement before trick (turtle -> lazy comes to mind), speed of slack giving, timing of slack giving. The .85 is a bigger kite, so you are going to need to give more slack than on the Jive.
Of the tricks you mentioned the only one which is a pain on the .85 is the fractured axel (axel-> fade), for some reason the .85 is very fussy about this manouver. If you are finding flick-flacks particulary hard, try giving a tiny pop before the initial pancake so the kite flattens out more readily.
Keep trying, it'll come.