It can depend on which assistant is doing the temp work. One Dr's assistant was moving things orthodontically (esp. last molars) and the other was real close. If they're to lose for the Dr at this time, do a solid cast, and lightly scrape the contacts 3 times with a BP, and fit the contacts to that model. Use the same knife to adjust the contacts for the next cases and see if that helps. Like SBob said, they somehow need to know it is on their end, especially if you have to proof of a solid cast.I check my contacts visually and using Accufilm. If the Accufilm won't budge, or breaks, I'm good.