It blocks you posting link until you have 5 posts.
Do you have an old VCR around? Connect the aerial into that, then connect the output to the NOVA-T Stick. This will reduce the signal a little - see if it helps and post new ScanChannelsBDA log. Alternatively give support a call and they should be able to post you out an attenuator FOC.
Does your 6 port splitter have a booster on it? Can this be turned down at all?