You could the desired items to the whitelist, so the specified perks will only ever spawn on the selected items.
For example:
"BradleyDamage": {
"enabled": true,
"min_mod": 0.03,
"max_mod": 0.05,
"perkWeight": 100,
"whitelist": [
"rocket.launcher.dragon",
"rocket.launcher"
],
"blacklist": null,
"Perk modifier cap": 0.0
},
"HeliDamage": {
"enabled": true,
"min_mod": 0.03,
"max_mod": 0.05,
"perkWeight": 100,
"whitelist": [
"lmg.m249"
],
"blacklist": null,
"Perk modifier cap": 0.0
}
Any buffs that you do not want to appear on equipment, set enabled to false.