JAJAVIER

I've been in for about 4 years but, spent most of it as a reservest. I picked up LCPL in 01/03/2006 and currently have the cuttion score for CPL in my MOS. The problem is that I was told I would have to wait 9 months to get promoted because, my time in grade would be reset. Does anyone know if this is true? I know that my Time in grade would be adjusted but, would it be to the extent where I would have to wait 9 months? The promotions in the reserves suck even if a Marine hasn't done anything wrong ...