Hi,
Marcus house had made a kos code for falcon heavy which only works with ksp 1.3 and lower. So i have modified his script and made it compatible with Ksp 1.8.1 and higher . So i will now continue to to update his script .
Script is finally complete ,here it is : https://github.com/daiwik-ksp/Falcon-Heavy-Dual-booster-landing-
More pic on : https://imgur.com/a/0vaAUyH