I installed NEI and checked both if the ids I changed them first time were taken and also looked for free ones. I changed the ids to the free ones according to nei and still i got this
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10:13:16 πμ Adding Material: 132:X132
10:13:16 πμ CONFLICT @ -124
10:13:16 πμ Adding Material: 131:X131
10:13:16 πμ CONFLICT @ -125
10:13:16 πμ Adding Material: 245:X245
10:13:16 πμ Adding Material: 244:X244
10:13:16 πμ Adding Material: 225:X225
10:13:16 πμ Adding Material: 239:X239
10:13:16 πμ CONFLICT @ -17
10:13:16 πμ Adding Material: 129:X129
10:13:16 πμ CONFLICT @ -127
10:13:16 πμ Adding Material: 127:X127
10:13:16 πμ CONFLICT @ -129
10:13:16 πμ Adding Material: 128:X128
10:13:16 πμ CONFLICT @ -128
10:13:16 πμ Adding Material: 218:X218
As for using the default client ids, industrialcraft is one of the mods I did not touch the default ids. To be 100% sure I deleted the config file and let the server create a new default one and still go the same conflicts.