....it would be a shame if a forum member is forced to call a company with no skin in the game for (basic) advice that should be available in spades here. To me, this would really speak to the present state of the sport in terms of who we all really are and our willingness to help each other out not to mention just how far this forum has declined in a hurry.
I'm beginning to believe that a lot of what Joey was willing to do in keeping these conversations interesting is starting to be missed almost immediately. Throw in the racers/teams moving to strictly "look at me now!' (insignificant) social media self promoting and perhaps we are witnessing the slow death of thoughtful intercourse....
Social media has taken over where a forum was. Its far easier to get answers on there than it is on forums especially when you are in a hurry and in some cases deal with a forum moderator that wants to control the content/moderate until the forum is to their personal liking.
Point in case : Theres a social media group for a brand with 10k followers that's two years old, there's a forum that is 6 years old with 8k members and less then 150 active members.
To the O.P. - Before I start rambling - when you tune : keep a log of what you changed, how you changed it and if it improved or not that way you can go back to the adjustments you have previously if you get undesirable results.
Your ride height for XC and MX are going to be different, on my stage 5 setup on my old wildcat I was running a 13.75 ride height for the Xc style courses , then 11.5 for the mx style stuff. The biggest thing is your spring and valve rates will be substantially different. You'll run a more plush setup for xc where mx will be much more rigid. I was running two different sets of shocks for this setup though too due to the weight changes with a passenger, the style of ride I was after and the things I needed.
A few things to try -
Playing with crossovers will help. You can get a more plush ride by having more clearance between the crossover rings to the crossover tender, the downside is more body roll. Having the rings closer to the tender will put you into the firmer spring rate faster which will firm up the ride
Play with the high speed compression - firming this up will help with your bottoming condition.
Play with the rebound - if you are compacting the suspension in a long whooped out section your rebound maybe too slow causing the shock to not go back to full stroke before the next hit.