[Roadman]

i meant if i chose not to use the DNA method which of the 3 options for item not as described would be easiest.

Apologies, I was under the Impression that you're still adamant on the DNA.

I'd say to opt for "The Item Is different to what I ordered", that Is, the wrong Item received. It's more likely they'll ship an Incorrect Item, than one with missing parts or not In the condition as per your order.

If i wanted to be on the safe side and go with the item not as described route, will they ask me to return the items and if so what do in regards of tracking id? do i box them or just give PayPal and tacking id?

PayPal predominantly want proof of the tracking ID as "being delivered" (In transit) and for the most part,  don't contact the seller.

So you can certainly box them and by the time they've received the package, your refund would've been Issued.

This is why I recommended Not as described. So take your next course of action with caution.

This ^

In my experience, the SNAD has a high success rate with the majority of companies.

If i go with the wrong item received option, will I definitely have to return something?

It's the exact same as saying DNA but this time round you have a backup plan in case they reply. If you say SNAD and they don't reply then of course you won't need to box anything.