想問reasonable it may seem, To address the crux of the problem, add fuel to this problem 句式是否正確，還有可否用在formal letter?

However reasonable it may seem, the argument that is intended to address the crux of the problem has actually added fuel to this issue.

Reasonable as it may seem, the (act/plan/recommendation/proposal/...) that is aimed at addressing the crux of the problem has been adding fuel to the heated argument.