That eBay item is truly "new" then OK, but I've been through two of them and the threads were fatigued. If you buy this eBay item, then feedback later please.
I've had to order a new one unfortunately for the price. While waiting for this, my Rebel apparently runs fine with the insecurely attached nut, without 'choke' (SE) engaged.
Did that second nut work out for you? The nuts are new but the threads on that batch were less than ideal having several failures. The new nuts have a minor redesign and excellent threads. I can send you one if you'd like.
1985 Rebel 250 ... 2005 Ruckus 50
Keith from Maine USA - Banning Spammers since 2016
New nut seemed to be fine, I think. I just recently installed it and have not had a chance ride my rebel. I started it tho, didnt seem like extra air was getting into the carb. It did have a small amount of gas coming out of the over flow. Theres some seafom in my tank right now though.
Thanks for the warning tho! Ill contact you if a problem presents itself.
Edit: not sure if that last post was for me or not.
I have the same problem. I just rebuild the carb, and when putting back the choke plastic nut, I noticed that the treads ware striped. Also after short test ride , there was a little wetness around the plastic nut. My question is , How do you replace the plastic nut?? what is the procedure??. Thanks