Here you go --
https://www.viabtc.com/tools/txaccelerator/I have to point out that due to the high demand for this free service, it will only work if you attempt to make ViaBTC accept your transaction within the first minute of each hour. Do it quickly before the transaction from Primedice drops....
This is one works. I have used it several times but as what i qouted stated, you have to compete with all those people trying to push their BTC transaction to be confirmed. It resets every hour forum time. If you failed to push it through this service you can try other transaction accelerator service but you need to pay the service. You can check the service discussion since I saw some member offering this kind of service.