Timing issue (Distributor)

[SilveradoDude]

I have had a timing issue for a while that I recently solved. But something about the distributor is bothering me. After I replaced my valve seals this fall I noticed the timing needed to be reset. While checking the timing I noticed the timing mark was way off. The timing mark was way off to the passenger side. Normally, the advance pot on the distributor is in the 7 to 8 o'clock position (with 12 o'clock pointing to the firewall and 6 o'clock pointing to the radiator). In order to get the timing mark in the correct position of 4 degrees BTDC the advance pot is not in the 10 o'clock position. Does anyone have any idea how this could have happened and any problems that it could cause?