It does sound that way to me, simply do as usual find the first grim before you use the trainer. Then search with cheat engine value between 1 and 1.
Now use the trainer to get more grimoires and at the same time tab back to cheat engine and look for the number 7. There will be two addresses with 7 (if not keep searching for unchanged values), right click both and find out what writes to both addresses, the one that comes up blank is the one you want to change.
Don't be lazy and expect them to do everything.
[Edited by sauced, 10/29/2015 7:58:50 PM]
[Edited by sauced, 10/29/2015 8:04:27 PM]
[Edited by sauced, 10/29/2015 8:06:00 PM]
You paid them for access to the trainers that they make and that they sometimes take suggestions to add new options to the trainers is just a bonus. It would probably cost a lot more than $90+ each person if they were to listen to every single trainer/option request for every single game.
You're a member, you're not entitled to anything.
That there even IS a trainer is amazing anyone who has tried to use cheatengine with this and MANUALLY searched for the adresses themselves knows how f*cking difficult it is to hack this game as it is weirdly coded at some points.