Years of milking cows, working construction, and riding various toys (atv, motorcycle, and mostly snowmobiles) have left me with some wicked tennis elbow/golfers elbow/tendinitis. After a long day of riding sled on nasty trails, the pain is almost unbearable that evening and the following day. Blah blah blah, what I do to correct it is, massage my forearms. Its easier to have someone do it to you, simply because massaging my right arm hurts my left arm and vice versa.
Use some lotion, and massage the 'outside' of your forearms. Press down firmly and massage/slide up towards your elbow. You don't want to massage down towards your hands, since it could push the swelling into your hands/wrists. You'll know when you find the right spot because it'll hurt like a beotch. Suck it up, and do it. If this is your problem it'll improve quite quickly, but don't stop once it gets a little better because it'll just return.
Also straight bars and a straight finger throttle bothered me a lot on skis. On my bob I had a UMI angled throttle, and that was much more comfortable for me. And it got even better when I put some mountain bike bars on that had a little bit of angle to them. It just felt more natural than trying to hold onto a straight bar
My 2 cents.
Here is my set up, it was comfy for me