Yeah full travel is hard to get on the manitous magnums with correct sag. They are great forks but do need a little tweaking to run well. I have a stache 5 but have fitted some 120 mm magnum pro forks. The damping is as good if not better than current gen pikes (which are my usual bench mark).
The 7 (I think) was fitted with the comp forks which are still pretty good but don’t have all the bells and whistles of the pro (also 32 mm vs 34 mm stanchions on the 2016 versions).
The last 10 mm of travel is really hard to get into and only do I manage it on the hardest of landings.
Tyre pressure is the biggest thing to get sorted – 2 psi out of the sweet spot can turn a perfect setup to crap. Even more important to get front tyre pressure correct and work with the damping of the fork. I find around 14 to 16psi ish up front works well with fairly heavy compression damping and fast rebound.
I had to flip the stem on mine as I found the front end too high and now just about perfect.