Did any of you find it difficult to reclass after being an 11B, to another MOS?

I had a very hard time with that transition. But eventually, I adapted and it worked out.

Not really. It only cost me another two and three quarters years. Then had to leave because my new MOS (92D) didn't have any combat mission, and they deleted it.

Nope. I went 15t after 4 years. You may need to give up rank in order to do it if your an nco at the time. That was my case. But it can be done they just don't want an e5 with no experience working on aircraft to be lead to people with way more knowledge and experience.