Hi, I've got this problem. I modded my F3 a little and everything seems fine, apart from two problems: I can't heal my limbs like normal it requires additional stuff, and I don't want it for this playthrough, so I'm trying to pinpoint the mod that forces it. Second, my iron sights mod acts weird, I can go iron sights with the RMB BUUUUT - the sights are so off (basically they are way too low). I'm using vortex for modding (yeah I know it's bad) and here's my load order. Thank you in advance :)

Fallout3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
Unofficial Fallout 3 Patch.esm
CALIBR.esm
xCALIBR.esm
Mart's Mutant Mod.esm
ArefuExpandedByAzar.esm
Gangs Of The Wasteland.esm
AWorldOfPainFO3.esm
DCInteriors_ComboEdition.esm
Mothership Crew.esm
BelthansQuoVagis.esm
AwesomeNPCs.esm
TheInstitute.esm
tubrrCompound.esm
FCOMaster.esm
Project Beauty.esm
CrossRepairWeapons.esp
RH_IRONSIGHTS.esm
CALIBRxMerchant.esp
Mart's Mutant Mod.esp
tubRRCompound.esp
SSN715SubmarinePlayerHouse.esp
MTC Wasteland Travellers.esp
Nojunkaidgrenadsminesitemweight.esp
The Mantis Imperative - Jello.esp
Project Beauty- UF3P.esp
Classic Fallout Weapons BETA.esp
Mart's Mutant Mod - DLC Anchorage.esp
Mart's Mutant Mod - DLC The Pitt.esp
Mart's Mutant Mod - DLC Broken Steel.esp
The Mantis Imperative - Mantis.esp
UndergroundHideout.esp
Fellout-Full.esp
Megaton Walkway.esp
Megaton Return.esp
DMButchOverhaul.esp
The Mantis Imperative - Medical.esp
Immersive Pickup Sounds.esp
Iron Sights Plus.esp
The Mantis Imperative - SkillBooks.esp
xCALIBRammo_override.esp
The Mantis Imperative - Combat.esp
The Mantis Imperative - XP.esp
WeaponModKits.esp
BBBackpacks-v1-1.esp
Dark Justice Duster.esp
MTC Wasteland Travellers (Optional)- Crowded Cities.esp
Mart's Mutant Mod - DLC Point Lookout.esp
Mart's Mutant Mod - DLC Zeta.esp
MTC Wasteland Travellers (Optional)- Crowded Cities less NPCs.esp
Rivet City Merchants.esp
RH_IronSights_Basic_VanillaPlugin.esp
RH_IronSights_Basic_AnchoragePlugin.esp
RH_IronSights_Basic_PittPlugin.esp
RH_IronSights_Basic_BrokenSteelPlugin.esp
RH_IronSights_Basic_PointLookoutPlugin.esp
RH_IronSights_Basic_ZetaPlugin.esp
Fellout-Anchorage.esp
Fellout-BrokenSteel.esp
ArefuExpandedByAzar-Radio.esp
Fellout-PointLookout.esp
RH_IronSights_PL_NewItems.esp
LucyWestCompanion.esp
JackoMilitaryEquipment1.esp
Arcenal.esp
Wasteland Soldier Armor.esp
Start Almost Perfect.esp
ZL-ACR.esp
LeatherBackpack - eng.esp
LeatherBackpack - rus.esp
Mart's Mutant Mod - Natural Selection.esp
KillableChildren.esp
KillableChildren - CotW.esp
KillableChildren - MMM.esp
Existence 2.0.esp
Conelrad 640-1240.esp
Dree Perks.esp
Dree Perks Anchorage.esp
Dree Perks Pitts.esp
Dree Perks Broken Steel.esp
Dree Perks Point Lookout.esp
Dree Perks Mothership Zeta.esp
Dree Perks Requested by Fans .esp
Max Level 99.esp
UPP - Pack 1.esp
UPP - Pack 2.esp
UPP - Quest Perks.esp
Sprint Mod.esp
Mart's Mutant Mod - Master Menu Module.esp
Mart's Mutant Mod - Tougher Traders.esp
Mart's Mutant Mod - Zones Respawn.esp
RH_IronSights_RemoveReticule.esp
RH_IronSights_Pitt_NewRifleSights.esp
WeaponModKits - ThePitt.esp
WeaponModKits - BrokenSteel.esp
WeaponModKits - PointLookout.esp
Fellout-Zeta.esp
WeaponModKits - Zeta.esp
Fellout-pipboylight.esp
UPP - Experience Perks.esp