If not sync, close and open the wallet several times..
seem work lol
For don't be very much invasive, every node push only 500 blocks, and after disconnect the client, client going to ask to another node more blocks, take another 500 and disconnect, going to another, etc etc.
You have only to be patience if you sync from zero, or more simple to import the chain from the DB linked in OP

This is all great, but I'm pretty sure that no exchange is going to bother with re-starting their clients constantly. 48 hours with no wallet on Bittrex- still unable to export my KORE to my desktop wallet.
THAT being said, DEV- you are kicking much ass for this coin, and I appreciate the fact that you are present in the forum continually.