Huh? Who mentioned a Wheeler torque kit? The Wheeler scope lapping and alignment bars as pictured, have nothing to do with a "torque kit"... whatever a "Wheeler Torque Kit" is? And I don't care what brand the tap, any can break and are a pain in the arse to extract. Matter of fact now, if I need to drill and tap any really hard or tough metal, I haul my stuff over to a friend's house, lock it up in a milling machine, drill the hole, replace bit with tap then gingerly turn the tap by hand- using the milling machine as an alignment tool for both the drilling and tapping.
Now, I'm almost sorry I even posted any tips in this thread. And BTW, I have seen both self-proclaimed and professional machinists and gunsmiths botch their share of jobs just as badly as any DIYer- and the so called professionals have zero excuse- but they tend to have well practiced alibis. Some of the work I do on my guns is done for two purposes- saving money and making sure the job is done right. I'm retired so my sweat equity costs me nothing and is not measured by a number of hours on a bill for inflated prices at the end of a job that may or may not have been done right or with any pride or craftsmanship.