Hi! I just recieved my LEO yesterday & love it so far. Vaped using the prefilled cart. that came with it. (menthol) Just decided to fill a blank cart with my cappicino liq. & thought I would check out the foam inside first. I tried to remove the foam with a tweezers & it didn't seem to want to come out of the plastic casing (mouthpiece). It started to break up, as I pulled on it. This is a concern cause I am wondering if I will be able to removed the filling & wash it & reuse it like I did with my Ego carts. Also, wondering if I will be able to remove the filling & replace it with "blue foam" if I want to later. The carts are from Boge (white casing, white polyfill, black soft flat tip mouthpiece) Anyone?