@Smollett
I don't understand what you're trying to say. The effective range of Heavy Flak with new Lesmok is actually longer (faster projectile speed). Therefore it's arming time is also further out, armed at 432m to be exact. So yes, the heavy is traveling farther before detonating (arming?). At the end of the day, it's total effective range is 1814m with Lesmok, +200m from before.
What this means is that you need to be farther away to get someone outside arming range, and only have 1 ammo before you need to reload. It kind of sucks, sure. I can look into decreasing arming time for Heavy Flak in general but this will also bring about other changes.
I didn't articulate too well before; basically what I'm trying to say is that even prior to 1.31, the heavy flak was a very high risk high reward gun and arguably one of the most difficult guns to truly master. All ships in goi take at least two very precise heavy flak shots to kill, shots that hit neither balloons, engines or guns and land in the 3-7 second window of an enemy ships armor being broken.
Often the gunner will only have one chance to make these shots when the enemy has his armor down & before he's entered into arm time. Once in arm time it's unlikely the enemy will lose armor enough to be killed before the ship firing the flak is killed itself.
Lesmok essentially broadened the time that a flak could be lethal in giving a greater chance for the gunner to land the perfect shot & save his ships life from the charging opponent. The flak with lesmok was lethal up to 1.6km in one salvo and gave the gunner a greater chance of felling the foe before they in turn did so to them.
Although now lesmok gives the gun a range of 1.8km, it's not really an effective range, since ships can shrug off 1 shot, rebuild their armor and kill the flak firing ship before their armor is dropped again thereby heavily reducing the high reward garnered from such a high risk weapon.
My proposal to offset the lesmok changes would be to allow the Flak bullet to survive longer in flight and thereby increase the lethal effective range of regular ammunition. As for the current arming time on heavy flak, it seems to be just fine as it is.
edit- TL/DR - The heavy flak losing the ability to kill at long range due to the lesmok change is a huge nerf, perhaps increasing the range (not the speed) of the shot will help offset this large nerf.