[size=14] :toocool: If you feel the *BUMP* it is already too late... :toocool:[/size]
;D Honk-honk!
Well, dude, just a blind shot here (haven't tried that weapon, sorry).
See, I think that your tweaked mortar MIGHT be too strong?! That is, if the "CfgAmmo" -part of the config in that addon shows a mortar with a higher damage ( > "hit" points) and if the "cost" of the weapon is high, then the soldier using that weapon prolly won't waste such an expensive/strong mortar on just a single unit - and so, he saves his mortars!
Just a guess... dunno m8.
Off course, you COULD try & ask the author.
He might knowsabout it?!