Your Singer Model 127 with the Sphinx decals is very easy to service yourself. You don't need to pay to get it done just follow the manual on where to oil the machine. Take off the needle plate and clean the feed dogs - make sure there is no thread caught in there too. I hope you have the manual? If not you can download one free from the Singer site. That machine will sew through several layers of jeans without a problem. Just oil her up and start practicing learning how to treadle! Have fun!
Nancy