The saddle nose sounds a little high, but if it's comfortable then so be it. Since the problem only comes while climbing, how does your position change when you start going up? Many people slide towards the back of the saddle so that they can apply more force to the pedals at a lower rpm. What this also does is force the rider to bend over more to reach the handlebars and that can be the cause of the unwanted pressure.
Given that, Here's a few suggestions to try. First, lift yourself off the saddle for a few seconds when youstart to go numb. Specialized has put a lot of effort into trying to prove how much better thier saddles are than others based on bloodflow, but when asked why all the riders on all the other saddles haven't had long-term problems if their saddles are so bad, Specialized had to admit that simply getting off the saddle for a few seconds every so often prevented any problems.
Next, if you are grinding up hill at a low cadence, try shifting to a lower gear and using a heigher cadence. This will naturally bring you back to the middle of the saddle where you are comfortable.
Finally, make sure that you are supporting yourself on your sit bones rather than any soft areas. If you're not sure try rolling your hips forward and back a few times until you find them.
As for your elbows, it sounds like you are putting an unnatural stress on them. This could either be from poor hand placement or from too much weight on the hands.
Are your hands in a natural position on the bars or do they feel tweeked at an odd angle? Put your hands out in front of you to about where your bars are located and notice where your hands want to be. Try to replicate that on the bike if possible.
Are you leaning forward heavily on your hands? Ideally you should be able to take your hands off the bars and leave your upper body in the same position. This requires you to support yourself with your abs and core muscles. If you can't do this, consider changing your position to sit more upright for the time being.
Sean
