240sx sr20det tranny probs

Hey all I have a s13 sr swap and it has a act stage 3 clutch in there but having some weird problems. In the morning I start it and it won’t go in any gear at all but after everything warms up a bit it will go in gear like butter but it takes like 10 mins for it to get going. Anyone have an idea why it has to warm up or have a solution ? Thanks -Shane

have you tried flushing? thats the first thing i would do…