kieranNEOs14

Ok so I hav an rb25 in my s14. Recently changed my clutch from a clutchmasters to an ACT unit and a competition 10lb flywheel. The release bearing was changed 3 months ago. So after I changed the clutch, it goes into gear perfectly but when I change from 1st to 2nd, it slips pretty badly. When I look into the inspection point, I can see the throw out sleeve is fully back against the gearbox and the release bearing is pressed a little onto the fingers of the pressure plate. It looks like I need a shorter throw out sleeve or bearing,, is this possible?? Clutch and flywheel both torqued to spec