Hi all! Thanks for the replies. I actually emailed the company, and you can order the NEW attachment that works with radian better. I was able to use the older one, with some "tricky" ways to get it on with the older version, but It wouldnt be convenient for airport, etc. because it takes a while to put back on. So, I emailed the company, as I said. They got the newer part back in stock. This seems to be much easier with the ratchet system. I was REALLY pleased with the level of customer service GOGO company has. I purchased my travelmate on ebay for a mear $50 including shipping, and bought the new part which was about $25 with shipping, plus they gave me a $5 off coupon. (mind you, i live in hawaii, so the shipping is ALWAYS much more then the mainland shipping) All in all, I guess I could of just got the GOGO direct from them for cheaper, but lesson learned! It's an awesome device. MY son is 4. And VERY lazy lol! He wont do well in walking in the airport since we have a really early flight, since im traveling alone, it will be nice to have it. He's about 43lbs, and the Radian is really heavy too, but it still works on the travelmate. So yes, if you email them, you can get the new piece, or just get the strap for the radian they sell seperately. If you want to email me personally, I can forward you the info they sent me. IT actually tells HOW to install it, they have pics and all. OVerall, great company! A+++