Mine was pre-ARF but someone else built it. I usually don't buy planes from others, but couldn't pass this one up. I too had the blocks break out and the pants go through the wing. I cut the bottom open, put in retracts and WOW, what a huge diff. That thing flys awsome with retracts in it. I have another kit I am going to build and put the same retracts in. Sweet plane!