Just installed used OEM HIDs on my 13' F150 and the left beam pattern is not consistent like the right beam is. Has a big time hot spot as shown in the pic. I checked the bulb and it seems like it's seated correctly. Any ideas what the problem is? Thanks in advance

 

I had a similar problem in the past. Try adjusting the prong that holds the bulb in. The D3S bulbs will only go in one way. I had to release a little bit of tension on mine to allow the bulb to not be pushed so far down. I pulled the bulb back a bit. Once I did that the hot spot disappeared and it was a more even pattern.