I'm guessing normal is different for each individual machine but this seems out of the box to me.. Having read that all internal smoker temp probes and thermostats are not accurate, I bought a maverick. Now I'm trying to maintain 180 degrees for some jerky. My MES remote says 185 and heating. My Mav fluctuates between 169 and 181. Is that much travel normal? I do understand how they work,..go to set temp stop heating until you drop to xxx and start heating again. And I understand that accuracy is not really expected but is this within a tolerable window?? And as long as it never goes "cool" does it matter?