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Are you able to post a picture of your antenna as it is now?
Some initial thoughts based on what I've heard:
1) The HD7695P has some longer elements at the "back" of the antenna that need to be snapped into place. There is only a brief mention of it in the installation instructions, but it is very important that these elements are on alternating sides of the boom, left-right-left-right. If those elements are not alternating, then the gain on high-VHF channels (7-13) will not be as good as it's supposed to be.
2) Apart from the mast, the antenna should be as far away from other objects as possible. If there is any roof or wall near the antenna (under, beside, behind), it can affect the performance of the antenna. There should be nothing at all directly in front of the antenna (pointing toward stations), and I usually recommend at least 4 feet clearance on all other sides of the antenna (this also means 4' over the roof-line, if possible).
3) Based on the signals strengths in your report, a pre-amp like the HDP-269 should be safe to use without having overload problems.
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