Lately the car has been getting harder and harder to get in to gear. Problem is mostly when stationary, I have to go 3 -2 -1 to get it in first gear with the car running. Sometimes the 1-2 is really notchy, 2/3 less so but still doesn't feel "right"

Any thing I can check? I adjusted the stops on the Pro 5.0 at beginning of season but didn't seem to make much difference. T56 trans, Centreforce Dual Friction clutch.