Originally Posted by
cxwrench
You're fine. It will work great. No need to change a thing. Most cranks with a 39 also had a 53. Most 52t rings are 110 BCD not 135...is that 52 actually a Campy ring? No need to look at different cassettes, the close range gearing will always shift better than wider range. Don't overthink this, your bike will shift very well.
Thank you so much for taking the time to respond with this. Very reassuring and exactly what I needed to hear. Thank you!