Well I just got my rig back; 5/1972 fj40 out of the shop; had a vacuum advance distributor and rebuilt SOR vacuum advance carb installed; runs fine through the whole range except when I first take off there is a 'flat spot' upon acceleration. Has to be just a minor adjustment, I hope. I want to fix it myself so if anyone has any wisdom, it would be appreciated. P.S. I had the original carb rebuilt, so it is for sale.