MZM controls for SNES

[Jadestar]

So i played through every 4+ star hack for SM and want to try some MZM ones and I'm playing them all on my snes mini which is great. However after playing 100 SM hacks, i'm finding difficulty adjusting to the controls in MZM, specifically missile selecting and aiming diagonal down.

Wondering if anyone has had any luck in retroarch making the controls more like snes. The only thing i want to change is make R aim down and just use select to select missles

[FelixWright]

you may need to get your hands dirty (repointing it if there's conflicts) for some of the more ASM heavy hacks but there is a patch that lets you switch to more sm-like controls
https://metroidconstruction.com/resource.php?id=438

[Jadestar]

Is there a guide on how to apply an assembly hack to an existing hack?