[mothered]

I will. And I had a thought today. After SE rams, SSDs or even a processor it is extremely easy to do the sn method since I have proof of purchase and can do the boxing method with the items to the manufacturer (since they are under 120gr) isnt?

You can certainly box the return on the said Items without substituting their weight.

And if this is indeed the case, can there be a problem with the carrier if too many boxing methods are done in a short period of time?

It's the same as any other SE you perform - don't abuse the same company/carrier with the same method In close timing.