Review on Yepp 20401 Maxi Seattube Adapter: Streamline Your Child's Bike Seat Attachment by Ricardo Ware

EDIT: Someone helped me and they STRONGLY pushed the part in and it just snapped into place. I'm not sure I could pull it out. All the tutorial videos seem easy but this one was a little harder. I increased my rating from one star to three because it worked, but not without help and strength. Original post: I bought this not knowing I needed an extruder that went into the base of the seat. I bought it direct from Thule. This part fits the seat exactly, but this adapter does not fit this part. In theory it should, but whatever I get doesn't happen and now it's behind the return window and I have a useless space.