111 We have constrained the two mechanisms within the model by using a large array of constraints, coming from both observational and theoretical considerations. Some of these are commonplace constraints that appear in many inflation models, such as the requirement that the model does not spoil the high-degree of success of BBN. However, some of the constraints that we employ are rarely seen elsewhere in inflation model-building. Therefore, we believe that, in general, our model is significantly more comprehensive than most others and that some of our constraints should be applied to other in- flation models. We first discuss the results for the modulated decay scenario within our model. After considering all constraints together, we found strong tension between several constraints relating to h , m$_{0}$ and $^{H}$∗ , as these yield the con- straint given by Eq. (4.220), which can never be satisfied. In conclusion therefore, we find that the modulated decay rate mechanism scenario within our model cannot produce the dominant contribution to the observed pri- mordial curvature perturbation as it currently stands. Now we discuss the results for the “end of inflation” scenario within our model. We first start with the case α = 1 . Similarly with the modulated decay scenario, after considering all constraints together, we found tension between several constraints, relating to m$_{ψ}$ and m$_{0}$ . These combined con- straints yield the constraint given by Eq. (4.194), which can never be satisfied, given that we require λ ≲ 1 . In conclusion therefore, we find that the “end of inflation” mechanism scenario for α = 1 within our model cannot produce the dominant contribution to the observed primordial curvature perturbation as it currently stands.