Yes, I'm so happy with my 2012 CAADX and the gorgeous super smooth welds but I did get the infamous 'Cannondale Creak' after I re-built it from the frame up. A club mate recommended the FSA BB30 conversion kit (about $21) and it's worked a treat when paired up with a Tiagra 4700 chainset and BB I had in the spares box. The shifters and mech are still Tiagra 4600 as the BR-CX50 cantilever brakes are compatible.

https://www.wiggle.co.uk/fsa-bb30-co...sku=5360430832

Anyway, to combat my rapidly falling fitness due to my shortened commute I've started going out for an hour before going to work and have a lovely 12.5 mile loop that immediately gets me into the countryside and even has a bit of single-track gravel for me to play with. This has lifted my workday mileage to a more respectable 18.5 miles.