Review Cisco Router Configuration

I am changing from a 3560g-24TS-E to a stacked 3850-24T-E and need some help. I have run into some problems and would like to clean up the configuration during this migration. This project will be to review the configuration and help with: 1 - BGP doesn't work right. I believe the problem is in the routing. 2 - Clean up configuration 3 - Controlling traffic with route-maps 4 - Is anything dependent on one of my bgp neighbors 5 - Any suggestions/recommendations