questions: seatpost, saddle position changes w/ fitting
Okay knowledgeable gals out there-
Last week I went in for the way cool 3D Retul computerized bike fit I won from Carmichael Training systems (2 hours, 2 guys, 3 cameras, many angles and overall very interesting experience). I have had the bike 4 months, had a pretty careful fit at the bike shop, but wanted to try it in case there was anything else that could be improved, given that I have had physical issues (arthritis L4-L5, and a whole series of problems with my hip going out of alignment and other areas in my leg responding with problems when they try to compensate).
Possibly relevant info: I'm 5'1", with a very short torso, have a 44 cm frame Specialized Ruby, with the stock seat post but Jett saddle replaced the Lithia saddle that came with it.
Net result, they wanted to move the saddle up and forward a bit to improve the angle at my knees and hips. However, my saddle was as far forward as it can be and the only way they could move it further forward was by turning the seat post 180 degrees. (which they did)
So, I do like the change in position but....my saddle won't stay level anymore. It started to tilt up and my DH tightened it back down, but it started creeping up again.
questions
Do I need a different seatpost if I want to keep this set up? We were concerned that tightening it too much might be a problem...
Thanks for your insights