yeah, like twice the thickness of the prior years. yamaha's attempt to save the engines from the crappy fuels and weak thumbs by reducing compression along with other changes.
long track vmaxes still had the thinner head gaskets, but they were also altitude specific and had the not so smart carbs.
the 96 cdi's reduced the timing just over 4000 rpm and again at around 6800. in comparison with the 94-95 models. known lean spots in the prior year's carbeuration werre adjusted as well. all those models were known for midrange lean burns if the throttle was held for extended periods without "blipping". too many warranty claims for unexplained lean burns. just some things that i had experienced over the years.