I recently re-purposed a pair of well uses 30 YO Mavic MA2 rims by lacing them onto some Nuovo Record hubs 36t rear/ 32t front. The front built up easily (for me) and has held true since the day I tensioned it up. The rear is another story. The rear rim had taken a beating with several flat spots; probably the result of me taking it off road a few dozen times. The first time I built it up the variance in spoke tension was so bad, I took it all apart and worked on pounding out the flat spots. The second time I laced it up it went much better, but once it was tensioned it would not hold true; but I figured if I kept re-truing the wheel eventually it would stay that way. Yesterday I loosened and re-tensioned the spokes to be sure the tension was as uniform as I could get it. Today, I mapped out a 5 mile loop that I knew had pretty rough surfaced road. After the first lap, it was knocked out of true. I re-trued and went for another lap; still knocked it out of true. After the third lap it was better, but still required some truing. After the fourth lap it was even better but still off and after the 5th lap it finally held true. I had not been fine tuning the truing during this process, so I put the wheel on the stand one more time for fine tuning. Then went on a 30 mile ride with lots of bumpy down hill and again no evidence the turning had been knocked out at all.

So, for those like Mr Rabbit, does this sound like the wheel will hold up over time, or is this wheel/rim on borrowed time?