As mentioned already please try v1.14.1
Please also make sure you're using the correct SI5351 library. It MUST be v2.01 (later versions are known for strong tuning clicks).
If it doesn't work for you you can always try earlier versions with less functionality.
All earlier releases are available at
For example v1.04 supports 10-turn tuning pot, but it doesn't have all the extra functions yet.
73 Allard PE1NWL