In the middle of a TKX installation for the 66, I temp installed a new yoke so I could service the ATF and get the trans in the car. Today I went to pull the yoke, in preparation of having the driveshaft shortened next week, when I noticed a drop of fluid coming from the plug. I verified the leak using compressed air from the spline end. First time I've ever seen one leak. Is there a common fix for this? I figure the driveline shop could probably weld the plug in place or have another way of sealing it. They're closed till Tuesday.