Issue with the feynrules model file of V2 Leptoquark

I have written a V2 vector Leptoquark model file. The model file is as follows:

(* ************************** *)
(* ***** Information ***** *)
(* ************************** *)

M$ModelName = "V2_Vector_Leptoquark_Model_DA";

M$InteractionOrderHierarchy = {
  {QCD, 1},
  {QED, 2},
  {NP, 3}
};

M$Parameters = {

X2RL == {
     ParameterType -> External,
 ComplexParameter -> True,
     Indices -> {Index[Generation], Index[Generation]},
 BlockName -> YUKV2RL,
     Value -> { X2RL[1,1] -> 0.0, X2RL[1,2] -> 0.0, X2RL[1,3] -> 0.0,
                              X2RL[2,1] -> 0.0, X2RL[2,2] -> 0.0, X2RL[2,3] -> 0.0,
                               X2RL[3,1] -> 0.0, X2RL[3,2] -> 0.0, X2RL[3,3] -> 0.0},
     TeX -> Superscript[Subscript[X, "2"],RL],
 InteractionOrder -> {NP, 1},
     Description -> "V2 leptoquark RL Yukawa coupling matrix"
},

X2LR == {
     ParameterType -> External,
 ComplexParameter -> True,
     Indices -> {Index[Generation], Index[Generation]},
 BlockName -> YUKV2LR,
     Value -> { X2LR[1,1] -> 0.0, X2LR[1,2] -> 0.0, X2LR[1,3] -> 0.0,
                              X2LR[2,1] -> 0.0, X2LR[2,2] -> 0.0, X2LR[2,3] -> 0.0,
                               X2LR[3,1] -> 0.0, X2LR[3,2] -> 0.0, X2LR[3,3] -> 0.0},
     TeX -> Superscript[Subscript[X, "2"],LR],
 InteractionOrder -> {NP, 1},
     Description -> "V2 leptoquark LR Yukawa coupling matrix"
}

};

M$ClassesDescription = {

V[700] == {
    ClassName -> V243,
    SelfConjugate -> False,
    Mass -> {MV243, 1000.0},
    Width -> {WV243, 10.0},
    ParticleName -> "V243",
    AntiParticleName -> "V243~",
    PDG -> 7200014,
    QuantumNumbers -> {Q -> -4/3 , LeptonNumber -> 1},
    Indices -> {Index[Colour]},
    PropagatorLabel -> "V243",
    PropagatorType -> Sine,
    PropagatorArrow -> Forward,
    FullName -> "V243"
},

V[500] == {
    ClassName -> V213,
    SelfConjugate -> False,
    Mass -> {MV213, 1000.0},
    Width -> {WV213, 10.0},
    ParticleName -> "V213",
    AntiParticleName -> "V213~",
    PDG -> 7200012,
    QuantumNumbers -> {Q -> -1/3 , LeptonNumber -> 1},
    Indices -> {Index[Colour]},
    PropagatorLabel -> "V213",
    PropagatorType -> Sine,
    PropagatorArrow -> Forward,
    FullName -> "V213"
},

V[903] == {
    ClassName -> V2,
    Unphysical -> True,
    Indices -> {Index[SU2D], Index[Colour]},
    FlavorIndex -> SU2D,
    SelfConjugate -> False,
    QuantumNumbers -> {Y -> -5/6},
    Definitions -> { V2[mu_,1,cc_] :> V213[mu,cc], V2[mu_,2,cc_] :> V243[mu,cc]}
}

};

LKin := Block[{mu,nu,a,aa},ExpandIndices[-(1/2)(DC[V2bar[nu,a,aa],mu] - DC[V2bar[mu,a,aa],nu]).(DC[V2[nu,a,aa],mu] - DC[V2[mu,a,aa],nu]) + MV243^2 V243bar[mu,aa].V243[mu,aa] + MV213^2 V213bar[mu,aa].V213[mu,aa]]];

LV2RL := -X2RL[a,b] anti[CC[dq]][i,a,ss] Ga[mu,i,j] ProjM[j,k] vl[k,b] V213bar[mu,ss] + X2RL[a,b] anti[CC[dq]][i,a,ss] Ga[mu,i,j] ProjM[j,k] l[k,b] V243bar[mu,ss];

LV2LR := CKM[a,m] X2LR[m,b] anti[CC[uq]][i,a,ss] Ga[mu,i,j] ProjP[j,k] l[k,b] V213bar[mu,ss] - X2LR[a,b] anti[CC[dq]][i,a,ss] Ga[mu,i,j] ProjP[j,k] l[k,b] V243bar[mu,ss];

LBSM := LKin + LV2RL + LV2LR + HC[LV2RL] + HC[LV2LR];

(*****************************************************************************************)

There are a couple of issues that I am facing:

(i) The tchannel lepton exchage contribution to the leptoquark pair production cross-section is not being computed.

(ii) The interference contribution between the indirect production (tchannel leptoquark exchange) and the Standard Model background is not being computed unless both RL and LR sector couplings are turned on.

How can this be rectified ?

Thank you in advance!