Should I engage an agent to transfer my Non-B visa from my old passport to my new one, or can I do it myself?

The post discusses whether to hire an agent or manage the transfer of a Non-B Visa from an old passport to a new one independently. Most commenters recommend doing it yourself as immigration procedures are straightforward and were completed without issues by those who did it personally. Concerns about immigration preferring agents due to potential bribery were also mentioned, along with advice to bring proof of payment of the passport application when going to immigration.