Do NOT let the boys and girls at any bike shop use any tool that removes metal on your bike. Taps, reamers, facers, etc are precision tools that that can be destroyed and destroy what they are used on in a heartbeat. Find an ADULT, no matter what age, that actually knows how to use the tools and has well maintained and quality tools. There is prolly no more important part of the bike than the BB where that is an absolute necessity! And Italian is as big as it gets - you screw that up and there is no place to go. High quality, piloted taps and facing tools are nothing less than essential to attend to a BB.BTW - the threads on the cups in the pix are filthy. Properly cleaning them and the threads in the shell may be all you need. Why are you working on a high $ bike of you don't know what you're doing? Just curious, ya know?