One of the reasons I got rid of my RGV illness was the fact that the powervalves could spontaniously self destruct.
It was the same with the RMX enduro bike. In the mid 1990`s I saw one drop its valve & bugger a blokes engine just before a ride out! I had one at the time but was ignorant to this problem, just thought it was "one of those things".
Besides, I`ve always thought the NSR was one of the most pretty looking bikes. The RGV just doesn`t look as nice, the early blue & white striped one is about the best looking, in my opinion.