Wheather it be you or a bud. Sometimes that tuning window for our 811e can be tricky or it behaves wildly different from track to track. There are many great set ups out there but you still hear some people say it didn't work for them or that they don't drive like a pro and the car is still too aggressive.
This is the set up I use as a slower but deliberate type of racer. The car is very point and shoot, smooth and stable with this set up. No off power slides in turns unless you bleep throttle. No mods or after market needed other than springs. And this set up works great for tight to wide open tracks as well as dry to moist. I do not like having to wrench as I get older so this set up is ideal for the person that wants to tune it and leave it sorta mentality.
Remember, if you are going to try this set up all the adjustments need to be made in their
entirety. Each one of my adjustments complements another, so missing one will not have the car feeling as I described. After you have the geometry adjusted, just use tires, shock oils & shock springs to fine tune for various tracks. I go lighter in the shocks than listed here mainly because my batteries weight is 390g total. I do recommend 16T stock btw.