Hi. I am 14+ months postop and doing great

but have a question about swimming. I'm a 49-year-old female, and I had a SLAP 2 tear, detached biceps tendon, subachromial something, fractured clavicle, cracked scapula, and a few other things I can't remember, from a bike crash. (The clavicle and scapula healed spontaneously.) I am finally able to swim enough to get back to triathlons, but I'm having problems whenever I get into streamline position (arms extended with one hand on top of the other - used when coming off the wall after each turn) or do drills with my R arm extended. I start off ok, but after 10-12 laps my streamline becomes a little skewed w/ my R hand pulled back a bit, and I can only do 200-300m of the drills. I talked to my former PT - I don't have PT orders, so he can't officially examine me, but he had me go through some motions and the results make him think I'm having "referred pain" from my neck. My neck has been stiff and tight, but I had a whiplash in 1997 and another in Feb 2008, both on the left side, so that's not unusual. I also only breath on the right when I swim, so now that I'm doing 2500-3000m workouts, that could be more of an issue, as it puts an uneven strain on the L side of my neck. My SLAP etc injury occurred in May 2008, and my surgery was in Nov 2008. I understand the basic concept of referred pain, but I'd swear my shoulder hurts, especially the muscles around the scapula. I got some kinesiotape but have only had the chance to use it once - I can't reach where I need it to go, so of course nobody was in the locker room the last time I went - but it does seem to help.
The reason I'm doing the drills is to try to correct a flaw in my stroke that should help my shoulder, but if the drills introduce new issues, I might need to come up with something else. (I've been letting my forward arm drop too much before I start the pull portion of my stroke.) I had a video swim analysis done (very cool!) and am working with a certified swim coach, and my Tri coach is also a chiropractor, and I know they'll do whatever they can to help. My PT also suggested getting a few sessions for my neck if the pain/stiffness doesn't resolve after I try some home exercises.
Sorry, I know this is long and I've thrown in a lot of information because I'm not sure what's relevant. I hope that one of our experts will be kind enough to take the time to sort out my ramblings and let me know their thoughts

And if this does seem like "referred pain," how can I teach my neck to refer the pain somewhere else so I don't get paranoid about my shoulder?
