Rad dealer told me that the Rad Mini forks will not fit the expand because they are different inside the fork neck, (diff. kind of fork).  Tried to calm the ride a bit  so I placed "Slime" in both tires to help with flats not occuring and the forward motion rolling. I Also place a Ganopper suspension seat post on the lowest setting inside the post.I replaced the sport racing seat with a Selle Royale Gelle seat that I found at Walmart.  The bike rides like a champion now, climbs hills like mad. I logged 35 miles on my last ride. No pain. I picked up a four inch nail at the end of the ride. I found it in the tube which was half inflated still and got me all the way home.  Amazing. such fun. Live life, ride free. Stay RAD!