A Pharmacy Automated Accounts Receivable System and Methods allows a pharmacy drug store chain to manage, track, and reconcile third party payor receivables associated with prescription transactions. The curl amount changing unit changes an amount of bending the sheet according to whether the sheet is stopped at the cooling unit or not. The system can also include a plurality of control bolts disposed through the hollow head bolts to enable vertical movement of the engine components, while reducing, or eliminating, unwanted movement and stresses in other directions. At least one door opening may be provided for pets who are able to enter and leave the buggy by themselves.