I removed the transmission from the car today, opened the OD, and found that the blocker ring has rotated and the pawl withdrawn from its normal location during assembly with the solenoid removed so that its two lugs were not located with respect to the pawl.
This seems to be the issue... Luckily, there is no visible damage caused by this mistake. I will carefully install the blocker ring, pawl, control plate and solenoid together to avoid these parts to rotate again during assembly.
I would like to thank all of you for your support and will keep you informed when the transmission will be ready
