Hey all hope you're all well. I'm trying SMOOTH-ON a two part Silicon rubber for the first time. Everything went well and I thought I had enough but as it turns out I was a bit short. I was not able to complete the mold and have about an inch or so undone. Can I add more at a later time, say when I get the new shipment or do I have to nix it and start over? Any help would be greatly appreciated.