Raving coin mining question

So I've been mining casually the past week and got about 40 raven coin paid out. The first 10 made it into my raven core wallet and the last 30 which is 3 payments of 10 because I hadn't upped the payout amount, will not be recieved. It says the wallet is being syncing headers. Stuck at 99.78% forever sometimes says 2 hours remaining. Anyone know any fixes… I'm weary to keep mining but love me some ravencoin.