tell me this can you pull the bow back at all right now ? Is the bow Maxed out LIMB screws tightened all the way? This is where you need to start.

1} tighten limb bolt's to max
2}mark screws with white out at very top of both screws
3} back off 1/4 turn to each bolt {Try pulling bow over after each back off}
4} repeat till you can pull it over ,but I wouldn't go any further than 3 or 4 complete turn's ,if you are unable to pull it then I'd have to say this bow wasn't a good idea .

nubo