the disc has two sides, obviously...one side has only some round springs protrucing, the other side has a center ~6" diameter section that protrudes into the pressure plate. IF properly installed, you should be able to lay the disc on the flywheel and the disc surface should touch all around...no interference from the flywheel bolts or anything. If backwards, the ~6" center will be hitting the flywheel-to-crank mounting bolts AND the disc will "not quite" touch the flywheel surface...like a 1/8" gap or so.
With the pressure plate installed, the disc is smashed into the plate and the center is smashed into the flywheel mount bolts. It's likely flexed to touch the surface of the flywheel too, so a visual inspection may not be obvious.
Get me mad enuf and I can change a tranny in 2-1/2 hours....start to finish. Red Green should be on UPN Thurs nights at 7:30, that's always been my motivator (seriously, few years ago, watched that show after discovering the trans I had bolted up had a bent mainshaft...show done at 8pm, I was back in the house by 10:15 with the tranny-t-case replace and everything buttoned up for a trail ride the next day...lol)
With the pressure plate installed, the disc is smashed into the plate and the center is smashed into the flywheel mount bolts. It's likely flexed to touch the surface of the flywheel too, so a visual inspection may not be obvious.
Get me mad enuf and I can change a tranny in 2-1/2 hours....start to finish. Red Green should be on UPN Thurs nights at 7:30, that's always been my motivator (seriously, few years ago, watched that show after discovering the trans I had bolted up had a bent mainshaft...show done at 8pm, I was back in the house by 10:15 with the tranny-t-case replace and everything buttoned up for a trail ride the next day...lol)