Geting roll centers, moments centers and crosses to work!

Resent post has aroused the friendliness of these pivot locations working together or not with different types of set-ups! Changes of crosses is most like a hour glass as weight moves around side to side through the X with butterfly effects on chassis thrust and roll! I would have to guess at all of this but would say intersecting takes place just to the right edge of the front of the seat on our cars! Left of center and rear at the balance center of total weight also! Not tire to tire weight movement through the cross but a close  on the axle line between the two front or rear called the roll center! Balance of these three without binding is part of any good set-up and pivoting all closely together allows easy transfer for handling! I use drawing a out line that helps? Draw a block of tire locations in correct order, correctly! use spring rates as factors of balance! Overlay it with wheel weights and split the distances! Factor in rear presents over this and then left side weight as the top layer! Wheel offsets do figure in but have been some what with wheel weights! With or without driver changes these lines considerable on my style of old school set-up! I use w/Driver to get a better view! See where yours is and if it fits your movement needs per set-up! We have tried to make things work but it is easier to let them work by putting spring rates that moves these three to a free floating close point! Adding steer and traction side to side or front to rear with easy movement! A movable plus sign (moment or tipping spot), a X sign (For the crosses), A upside down shortened left armed, angled cross for the finish to show the moment center, roll center, and actual cross center location! Ours is of a left and rear trimmed by 1/4 total, hour glass shape and that puts it next to the drivers seat at the front edge! Adjusting percentages by ride heights and wheel weights or springs to get to this point  is a good old school start for a winning chassis set-up hiking or not! Weight placement of battery and gas tank can be hard to over come! I have moved plenty and still added150 pounds left and low to get this correct before being able to win old school! Math formulas from a math whiz may be easier to come by some answers if given your factors and desired location of all three to fit your needs! A 4X6 and a ruler with quick ratios  of factors guessing can get you closer than you think as to where you are now with three or four drawings and watching it move can improve thoughts about changes made in set-ups! A balance of five factors in one spot!  This is where we attach the string that holds us in the turn making it look so easy! Or was that the static ground strap hanging down under the chassis? Most think it is just the end of the extra seatbelt hanging down! It does work for us in more ways than one to anchor the car to the track with less down force needed!