I'd start by turning your limb bolt's about 1/2 turn each and then check your poundage ,if you aren't where you want to be then repeat the step again .
The biggest reason likely for your bow not shooting the way you want it to is because they go by a basic setup ,not a seup which refer's to you or them ,so when you bring your bow home you still need to fine tune it to yourself ,nobody can set the bow up to you unless your dshooting it while they're working on it .It sound's to me that your arrow fletching might be hitting your rest which in turn is nocking your arrow off center .Try moving your rest in a bit and then shoot it ,if it's closer to where you want it to shoot ,then move it again in the same direction till you get it where you need it to be .I'd start at about 10yrds get it centered and then back off to 15 to see if it's still centered ,if it is then back off to 20yrds and repeat .Even if the bow shoot's great for him ,it won't shoot the same for you.
For this type of work you don't need to have a press .As well if you get your bow centered then adjust your sight over a bit at a time till and then repeat the step's I've mentioned above ,you might not have to once you get the arrow rest set right .
nubo

nubo