Stealth Mathematics

[Illuminated One]

Well, since I've taken an interest in stealth I noticed that the probability table on p5 in the manual shouldn't work.
You still have 2 open ended dice rolled but these are d25.

So I was wondering if anyone had an easy formula to calculate that or even such a table already.

From what I'm thinking if it wasn't open ended it should be pretty easy to do that.
Formula is 40 + stealth + 2d25 >= destealth + 2d25.
That is 40 + stealth - destealth + 2d25 - 2d25 >= 0.
If I'm correct -2d25 = +2d25 - 52
So the formula can be expressed as 4d25 >= n which should be calculable.
The problem is it don't see how to bring in the open ended part on both sides here.