Are you doing for your mods or just any mod?

Heavy Tank requires repair kits and needs to have iron or steel kits subbed in to make it compatible with IR
https://mods.factorio.com/mod/HeavyTank

Advanced Machines is not a mod I use, it was requested. It still needs a workaround for that mod, since mod load order messes things up.

I will take a look at HeavyTank and see what I can do.

This mod is not just repair kits that needs a change, but some other things as well:

Some items requires vanilla ammo, which is unavailable
Some items requires Flying robot frame, which is unavailable

Anyway, it got added

Error loading the mod in the latest version due to a heavy tank reference:
data.lua:26: module prototypes.HeavyTank not found; no such file ...... HeavyTank.lua

Edit: worked around it by renaming HeavyTank.lua to heavytank.lua and changing the reference from prototypes.HeavyTank to prototypes.heavytank. Gotta love case sensitive file names in lua.

Strange error, I will add it to an update to write it all in Lowercase.

You are awesome.. Thanks!