Before I get started, I KNOW that everybody is different and what works for my stoker might not work for your stoker and vice versa. That being said my stoker and I ride an 2005 Burley Rivazza which is an aluminum frame. She complain a lot about sore elbows and sore neck/upper back (near shoulder blades). Sore neck I think is from a pulled muscle but I think it has healed (hopefully for good). We have about 500 mile on the bike and I picked it up from the shop in the second week of July.
I think some of this may be becasue she is a total newbie to the bike and before riding she was NOT athletic at all but has taken to the tandem quite well (I am lucky). Because of that I am hesistant to make any big changes because she is new and is still getting use to it. Most of us expereicned folks forget about how long it takes for the body to get adjusted to a bike and the road shock. I know tons of tricks to fit a bike as I have been an avid cyclist for 15 years, but do the same rules apply to a stoker? Anyways I was going to start by raising the handlebars a bit. Right now they are level with the stokers seat.
I was also going to look into either a carbon seat post or a suspension seat post. Question is will a carbon post make that much difference? Who makes the best suspension seatpost for ROAD bike usage? Was going to hold off on the seatpost thing until I tweak the setup a bit and do a bit of trial and error. Would a seatpost help with the sore back in the shoulder blade area? Seems to me that is a function of handlebar setup (guessing here).
All this being said any advice would be appreciated. My stocker wants to go on LONG rides and our longest so far is 60 miles. So if I keep her comfy the long rides WILL happen which I am looking forward too becasue that is what I enjoyed doing on my single.