Flywheel/flexplate broke on 1998 Isuzu Rodeo, need diagram.

Flywheel/flexplate broke on 1998 Isuzu Rodeo. Local shop fixed it for me, but said when I got a rebuilt tranny put in 4-5 months ago at a different place out of town, they only replaced 3 bolts, and not all 6. They ones that were in there were installed in an every-other bolt fashion, which is very suspicious. I'd like to find a diagram of a transmission, because the shop said the flexplate is completely encased, and there's nowhere to the bolts to go if they did manage to wiggle loose or something. I would also like to know how easy it is to reach the flexplate after the transmission is installed, if it is very involved and you have to remove the tranny all over again, or if you can reach it by hand without much problem? Any help is much appreciated.