Hello Al,
in many situations it should be possible to split calculations in steps, to get more parameters involved.
a+b+c+d+e=x - > a+b+c=m; d+e=n; m+n=x
I know that you already use this workaround and it has the advantage that very complex formulas will be broke down for a better understanding of the structure.
So have a nice day
Karsten

p. s. Nevertheless it is always a good idea to push boundaries away;-)