Hhmm, assume you mean Convoy L2, not COURUI L2 - I don't think I ever saw a difference that large, but not sure - I never look for it because as soon as I see the negative sign, I reverse the leads, so I only read and record positive amp #'s. I'm talking about using a regular UNI-T DMM, not a clamp meter.
Also wait'n on freeme for the group buy - see here: https://budgetlightforum.com/t/-/35973. Nothing new posted, but freeme posted he's getting a bit burnt out on these, I'm sure some frustrations...