Advice needed on manifold repair

Some of the best advice I got was when I was a CPY in the Army and I was in an extremely frustrating situation and full bird Colonel told me "don't ever give up".
It has served me well but has also bitten me in the ***.
If it's your life on the battle field, that's different. "Attempting" to fix that manifold just doesn't make good sense to me. I'll say it again, goid luck.