I get no search answers for the description you have given. Goldline comes up mostly tires, Makeline is a system to prep for making pizza’s copyrighted by Domino’s, And the model number comes up as paper, hobby, Goldline also comes up as a name of a masterbilt digital temp control
So harrison, if you could describe the case and find the Brand, It would help. Domino’s used several brands if it is a pizza prep table including Delfield, Advantco, If it is a Pizza prep, check if it has air cooling to the top or plate cooling. If forced air check the evaporator fans and cover/ducts. Check for freeze up of the coil. Air flow is critical. Is the coil clean? Do all compartments have a pan in place? If not, it will not cool properly.
Lastly, if the top has a cold plate, it is the last thing in the refigerant lines to get liquid/ gas. Charge wieght is critical for it to function as intended. Measure your tail coil temp. Should be below 35F late cycle. If not it is undercharged.