I've never seen a 510(Joye510, yeti, dura etc..) that came with foil covered carts like your 510a does. Will this model and the subsequent manual models and accesories(batteries, atty's, PCC's, passthru's etc...) be compatible with all the other versions of the 510 out there? Also, will the normal, non-foil covered carts work with this model and vice-versa. No hurries with a response, I know you must be extremely busy. Congrats on the new website.