I have a few old CVKs here with the side mixture screw. They have no TPS or heaters. Little dab of silicone should fix you up or even better would be some PC7 but be careful not to block the passage. I am not sure what you drilled into either, I haven't looked at my carbs and can't picture it off the top of my head.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!