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Well a UV/IR Cut filter is not going to turn a modified camera back into a standard model. The darker blue cast filter , usually called LP2, in the internal filter holder is what gives the stock camera its colour profile, that and white balance. When LP2 is removed you open the camera up to far more red light than stock. The LP1 filter, also called the anti-aylsing filter, actually has a uv/ir cut profile and some people leave it in place for that reason. With both LP 1&2 removed you do need to put in a uv/ir cut filter ahead of the sensor. It provides a cutoff below Hydrogen Alpha so you still get the five fold increase in Ha light but it does not colour correct. Rebalancing the camera will not help much you will need to put in a filter that has near the same bandpass characteristics as the original LP2. Personally i prefer to keep my astro camera for astro work and not fiddle around with reconfiguring it.
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