I have a Q-Modeling Nike -X (retro mega) kit that the body tube was damaged on and the nosecone was garbage. The original tube is 24 inches long - I have an extra 18 inch tube and a good nosecone I was thinking about using instead. So basically , I will loose 6 inches of body tube length. That puts it roughly at 39 inches on at 2.6 tube . What are going to be my downsides and what to look out for. I would love to upgrade it to 29mm but think I will keep it at 24mm for now.

Suggestions ????