. Try Saga, they specialise in covering us old bastards, they give you 120 days per trip, that's with pre existings. The best I've found, including price.
The ask:thailand community, consisting of multiple Q/A groups with over 100,000 members, powers this platform. It is not an official government resource. Our members actively contribute to this resource, and while we strive for accuracy, we cannot guarantee its complete reliability. Assistance to travelers is provided as a community service.