Craftsman Torque Wrench rebuild/recalibration

I'm a little late to the table on this one but I haven't been logged in for a while. I also have the Craftsman torque wrenches and use them on my bike as well so calibration was a concern. I am lucky enough to have a friend at a GE aircraft engine shop so she was able to take mine in when they were new to be checked at their in house lab. If you know any local manufacturers find out what they use as far as tools and service. They can be a great review source. I also back my wrenches down to the lowest setting after each use to preserve the calibration/internals. Good Luck.