As a small archery pro shop have had customer come in and ask for help with a bow they purchased from other dealer or from Walmart. I try to be helpfull, will get them a contact phone number, a address for them to call for service and to get a return authorization number. But if they want me to work on a bow to tune or correct a problem they are having it is $20 hour for my efforts. I have had a bad experence with some of the mfg, if you work on a bow and put new parts on to correct a problem, you may not get paid for all your efforts from the mfg of the product. So it is best to send the bow back, have them make good on the product.
I had a shipment come in on five bows from a major mfg, when I went to put them on the rack I found that they all had a problem with the top wheel did not have teflon spacers on the wheel and the botton did. I called the mfg, who wanted to send me the teflon spaces for me to put on, to me that is not acceptable as it them would cost me about a hour per bow to take the spring off, the c clamp, the wheel shaft and then insert the spacer and re assemble. So I ask them for a pickup for all the bows and had them do the work.