The percentage resistance is irrelevant - the heavy duty mod gives a greater total kinetic resistance, even though it has lower percentage kinetic resistance. This is why with more shield boosters, a combination of heavy duty and resistant boosters give the best result. Remember that the percentage is a modifier on the base shield strength. A lower percentage on a higher base shield can be much better (as in this case).
The heavy duty mod gives a fixed amount to all resistances and does NOT change the resistances as granted by the shield (to be honest, I'm sure we are both explaining the same thing to each other).
If you add a kinetic resist booster, it will lower your thermal resist, negating the effort and materials spent on the shield. This is not insignificant, it starts lowering your thermal resistance fast. Resistance boosters are no longer worth it, they impact other resistances and you end up playing whack a mole. I have both my Chieftain and my Corvette PERFECTLY balanced, shield and hull, 39% kin, 40% therm, 50% exp, and my hull at 46% everything. I;ve spent the last two weeks doing this, it's very fresh in my mind.
Like I say I think we're just saying the same thing in different words and confusing each other anyway, I know you know what you're saying, you know I do...
