Thank God I found this forum! Thanks in advance!!!!

I just bought a bow - Martin Saber (55#/70#). I purchased a Spot Hogg Hogg-it sight (nice). I has a mounted quiver (don't know the make). And, it has a Whisper biscuit I took off another bow (don't know the model).

Anyway, I have tried to set it up myself but am getting terrible results!! I checked the tiller adjustment and they both measured out at 8" (equal). The bow is set at approximately 65 lbs (based upon turns as I do not have a scale). The arrows are spined at 50/60. I have a bow square so I was able to place the nocking ring about an 1/8" high from square. I used the two holes on the riser for a reference point; just a small amount of light was showing on each of the holes as an arrow was nocked. From here I placed my peep sight 5 1/8" above the nocking ring. All this I figured would give me a good starting point from where to make finer adjustment, but NO! The immediate problem? I run out of sight adjustment as the bow shoots too low (shooting at 20 yards)! So far the only way I can get the arrow to the target is to place the nock ring about 1 below square but this looks funky! I'm sure some folks will recommend a Pro Bow shop (and that would make sense), but I do want to understand how these things work. I want someone to teach me how to fish rather than give me a fish! Any help would be greatly appreciated.