how can I fix my 427 sewing machine?

Hello Janie
First of all make sure you are using the correct needle for the fabric it is important especially if you are sewing on nylon or stretchy fabric, if when you sew on normal cotton fabric with a good needle and it is missing stitches you may need to retime the machine, there is no facility for me to upload timing instructions but if you want to contact me type my email address as you say it not as you see it, email addresses are not allowed on here

kendourof at yahoo dot com
February 2014