Hello!

I have this Audi A3 2.0TDI QUATTRO 6-speed transmission.

It have a Sachs performance clutch installed with a Single Massive flywheel.
The car has been difficult to get in 4th gear down from 5-6 for a while (Had to slide it a bit into 3rd) to get it in 4th w/o a bit force.

Now it's the other way around, the car is hard to get in 3rd down from 4th ONLY when I've been in 5th and 6th, and is easy to get in gear down to 4th from 5-6.

Anyone know what this can be? there is no grinding noise or anything, it's just some resistance when I shift down from 4th to 3rd.