How do Magic Mortar and Flame Holder interface?

[Roja323]

Also saw the trend here:
0x- 408 + (4263*1.025*1.030)*1.5 = 7168
1x- 408 + (4263*1.100*1.020)*1.5 = 7569
2x- 408 + (4263*1.175*1.010)*1.5 = 8001
3x- 408 + (4263*1.250*1.000)*1.5 = 8401

put simply, at 3k tp: skill + 1.5(hpdif)(1.025+(0.075*x))(1.03-(0.01*x))
x = number of maneuvers


Where if u assume the bonus given by flame holder, you can see that there is a secondary bonus that decreases by a 0.010 for each additional fire maneuver, i dont know enough about ws equations (ftp str etc) to understand what that extra value is comming from, it just seems way to coincidental that it lines up perfectly now.