From what I've gathered off this site is that your problem is most likely the valve stem seals. You could do a leak down test or a dry and wet commpession test to determine if it's the VSS or the rings. I'm sure Fast eddy or someone with much more knowledge will chime in. Good luck.

94 SR Bought for $650. New Crank, Updated Lower Intake plenum, 15x8 procomp wheels driver side Bouncy Seat, Stock mitsu rear locker. Up coming mods; 35x12.5x15 Goodyear wrangler Kevlars, safari style roof rack, 2" BL, Spring spacers or OME springs, recovery gear.