I have two new Rad Runner Plus(es) and the Hollywood Racks Carrier we bought via Rad Power.  Unfortunately, neither Rad Power nor Hollywood Racks has the adapter bar need to hold the Rad Runner (nor other "step thru" models) in place.

Does anyone have an alternative source?  Or anyone used an alternative brand adapter bar? My favorite brick-and-mortar retailer has the Saris, but they say it will only support 32 lbs. Of course, I have no idea of the force exerted down by the rack clamp.

Thanks for any experience, advice, guidance!

RADE ON!