Marc - I have not yet run across an installation that was double-nutted, in all of the cars that I have personally changed the TAB's in. Several of the bent bolts were still apparently tight ... so it's not the nut backing off that initiated the bending (in those cars at least). Other bent bolts were loose as well, and some were missing some or all of the shims. I can't give you a firm position on the nut issue at this point, as it relates to bent TAB's. Please advise on your experiences to date. Toby Peterson VIN 2248 Winged1 - needs a bath! --- In dmcnews@xxxx, "Marc A. Levy" <malevy@xxxx> wrote: > Toby, > Were any of the bent bolts you removed double-nutted?