Tail lights not working while drive. brake,blinkers work

Duplicate the issue ? You mean the lights are working now ?
The turn signals and brake light circuit is one and the same. The parking lights are on a different circuit. The parking lights get power from the headlight switch and don't travel thru the turn signal switch.
So have you checked the park fuse for power ?
The location of the fuse should be in your owners manual.

I thought someone might have moved gas tank so I removed skid plate

check the parking light fuse

CHECK FOR THE BULBS PROBABLY YOU WILL HAVE A BRAKE LIGHT BULB WIRE BROKEN.JUST RENEW THE BULBS.

check tail light fuse, under TAIL

Check all the bulbs at tail end for parking and brakes, test grounds and harness for trailer. Check fuses. clean batery terminals, Re instal head light swich properly and make sure all wires conect.
Vitally

Check the fuses, and check the brake light switch, which is usually found up under the dashboard attached to the pedal arm. Make sure the connector in OK, the switch activates with the movement of the pedal. failing that replace the switch.

Hope this is of some assistance.
Ed

I found out that if I pull the headlamp switch a little bit that the tail lights will then work for some reason

Replace, or adjust your brakelight switch located on the brake pedal arm.

You have a bad switch at the brake pedal. Or a loose wire. Try light pulling on the wires on the switch at the brake pedal under the dash. They should be tight and secure. If tight and secure the switch could be bad.