Hello,
I am sorry to hear it.
The behavior you are experiencing is known an can the solved.
Definitely I can support your with professional transmission tunning. I have more than 10y of experience tuning ZF products.
Please, send me an email: [email protected]
Thanks.
Dodge Boy
( YouTube: https://www.youtube.com/channel/UCAl4bUhkijzHdK8B9m1Z2lQ )