PW50 Compression?

[ZoomingM3]

Can anyone tell me what the proper compression reading should be on a stock 2002 PW50?

Thanks

 

[hh65flyer]

I just finished the top-end on my son's 2000. It read 90 PSI before and now reads a little less than 100. Doesn't much seem like it was worth it but the bike does actually run now!

Hope that helps.