groundloop wrote in post #16564748
I gently tried to snug up all the screws that were easily accessible, none of those were loose.
If it's as you suggest, a cracked thread, is that something that can be repaired for not too much expense? Just wondering, I'll more than likely return it, but just checking. I guess if all else fails I'll file a dispute with my credit card company (I paid through paypal with a credit card).
If the screws you tried to snug up were on the ones on the mount, those aren't the ones. You would have to take off the mount, and go for the next set or two fo screws inside. May be accessible without removing the circuit board, or you may have to go one level deeper, and remove the circuit board (an easy task). But, I think that's too much work to do for a lens you (probably) paid FMV for.
To repair the cracked thread correctly, you would have to replace the barrel, which would require a trip to Sigma, and won't be 'cheap'.
Easiest way to handle this is to send the seller a message. Give him 24 hours to respond, and if he says "Too bad, as-is", open an Item Not as Described case with ebay, and with Paypal. Do this now, and don't wait any longer then you have to. You shouldn't have to go to your credit card, unless it is not found in your favor.