Rl Craft modpack extension support help.

hello. I am wondering if someone would help me with finding what mods / configs to turn of or change based on some incompatible I am having.

For instance one i have found is in gregtech. The world generation wont spawn and is forced with normal ores. Aswell as the world's surface doesnt start at vanilla 6 level and doesnt have the vanilla bedrock depth

Not what i mean. I am making a addon for it but i need to turn off the part the screws with world gen because im trying to add gregtech to it

You Cam add any mods to a modpack. But when you do you have to make them work together which is what I'm trying to do