Hi all sifus out there..

I'm drivin a 06 Myvi. Just changed my clutch last few months. Opt to choose clutch set from Aisin rather than stick to oem exedy. Nw i haf a problem.. My car clutch hard to engage when idle or during standstill.. sumtimes impossible to even engage into gears.. when driving no problem shifting up or down.. My bad for not opting to change altho i discovered smtg wrong with it after 1st installation frm my mechanic. 2nd time dismantle and put back also same.. any...