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

Yes. I had to reclassify from 11B to 77F due to a service connected injury. The support platoon I was attached to as a 77F was a joke, compared to my old Infantry unit. No motivation, PT was pointless, as it was 15 to 30 minutes. And it seemed there was little cohesion in the platoon (and Company).
I'm not bashing on the 77F MOS just because I was Infantry, I'm simply stating my experience with one unit.

I went 11C to 13F, never looked back. I did miss the pretty blue cord thou.

For me, it wasn't so much reclassified itself that was somewhat strange as it was going from active duty infantry to the reserves.

Nope. For me it was an easy trans....................wait a tick.........I was never Infantry. I was Combat Engineers.........oh well the answer is still the same. It was an easy transition physically.....mentally was a different matter.

Probably. But I was opposite. I was welder reclass to 11bang bang 2008 2009. And it should be easier accept you will have to realize your new in a skill set Like I had problems making rank with other soldiers because they new all the combat drills for years and they was learned at welding

I only reclassed from 11c to 11b(yes that required re-enlisting, no they are not almost the same thing) I found myself working in supply for a few months in Afghanistan, that made me want back on the line.
I was a Bradley commander for a while(same MOS, completely different job) that was extremely frustrating being that I never saw the inside of a Bradley until then(no 11C do not operate Bradley’s, I was 11B at that time)

I went from 11b in the 82nd to 74f (computer programmer). It was a different way of life. I had more time with my family and a lot more relaxing

My Plt Sgt. Made it very simple for me , he told me the reason I so very good at my job was because I loved my job . But our job wasn't just to take life but to save life,so the answer for me was the medical field.So I became a medic ,and then an o r tech , lol closest I could get to being the S F Medic....

I had been infantry on active duty, and later reclassified to 19D in the National Guard. I wasn't very impressed with the reclassification training at the time but we saw some major improvements in the program before I finally retired.

All-in-all, the MOSs were so similar there wasn't any difficulty. It might have been a different story if I had been reclassing into a support MOS.

Why would anyone reclass?

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.