Front derailler cable guide for Cannondale Chase

After having used my Cannondale Chase for many years for dirt jump activities, I wanted to convert it back into a normal mountain bike for my 10 years old son. The cable guide for the front derailleur was missing... so I've printed a new one...
The diameter of the cable guide is the same as the bottom bracket, but due to the uneven welding it doesn't fit perfectly to the weld and the bottom bracket. This is why you will have to heat the printed cable guide wit a hair dryer then you'll have to p