I recently developed a leak from my NP 208 from the front yoke. I rebuilt the t-case about a year ago and it didn't leak a drop since the rebuild. The rebuild kit came with all seals and new bearings but didn't contain the seal that goes behind the 1+" nut that holds the front yoke on. Haven't been able to locate one. Last time I used some sort of drain plug I cut to suit my needs....would like to find the proper seal this time. Can anyone help?