Just passed the interview for SMRT (tech3)

I just passed the SMRT interview, I’’ just waiting for my offer letter, my concern is the type of offer that ill get. I’ve been a tech2 for 1 year and 6 months and everybody is saying that Ill get 10% of my current hourly rate and a raise. There are MJTs making more than what I’ll be making with a 10%. What is your experience with offers? Can I do a counteroffer? Do all tech 3 start at the same level?