Hi,
I'm well experienced and I can help you to fix the issue. As per the description I have to send GPS data from a receiver connected to arduino uno to a lcd attached to another arduino uno using ESP8266 as communication medium between two arduino unos. As per my experience you do not need arduino uno's in the middle as ESP8266 supports coding using arduino IDE and its capable of connecting GPS receiver and display. So you can do the project only using two ESP8266 modules but still you need to fix the thing I can help you with your existing setup.
Thanks and regards,
Chanaka