Has anyone drilled the carb slide on a NC23? I have sluggish acceleration and would like to try this mod, what size hole and what are the pro's and con's my bike has full gf system, 112 factory pro jets and foam in place of the paper of the filter, any help appreciated

If it's sluggish your fuelling is probably out, not something that drilling your slides will fix. That's no longer a recommended mod anyway.