Pull Ups and Dips ?

I am curious if any of you found them harder to do as you gained weight, or bulked? I have put on both good and bad weight over the past couple years and now that I am back full swing I find myself struggling to do them.

At 195lbs in the Navy I could do dips and pull ups with 2 plates on a belt. I would rep 8-12 times. I injured a shoulder and stopped both all together. I got up to 215lbs in real good shape without them in my routines. Bulked up to about 260lbs and gained fat and muscle and never really kept on track. Well now I am down to 245lbs and trying to make my way back to 215. I am just having hell trying to do pull ups at my current weight. Over the past 6 months I have gained back a lot of the strength I previously had prior to leaving the gym but I am still not having much fun doing pull ups or dips. I am taking dips slow since I don’t want to hurt my shoulder again, but the pull up thing is killing me! I can’t say I’ve done them every back routine, but I notice that I have not improved much either.

Basically has anyone in here bulked or put on weight and noticed these movements harder or not possible to do prior to the weight gain? I assume you can gain muscle and not get stronger at certain things right? I just feel silly asking about this but today was back day and pull up failures have me thinking. Do pro BBer’s do these type of movements, or does their body weight hold them back too? I can exceed my bodyweight in any full body lift aside from these… i.e bench, deads, and squats, and in the case of the latter two I can more then double my body weight.