The biggest issue comes when down-changing from 4th to 3rd. I had all this done because when driving hard a lot of the time it wouldn't let me go into 3rd from 4th straight away, it'd just be solid and I'd have to release pressure on the lever and then it'd let me get 3rd. Driving back from the garage on the back roads I could not replicate it. It still didn't feel great but it didn't stop me getting into 3rd.
3rd to 4th feels a bit odd at times too, sometimes taking a bit of extra effort half way through the change, just generally feeling unpleasant and other times it slots in as smooth as can be.