Moses After 4 hours the finish will still be tacky. The temperature needs to be around 75 degrees to set up properly. I would leave it on the dryer overnight and see if it is set up in the morning. If it is still tacky you can coat it again. I am using Diamond II now and it seems to set up better than Flexcoat. It also seems to be clearer. Let me know in the morning if it has set up. Pat