The more I think about it, the more I think seat height (SH) is a better measurement to go by than PBH if you're going to dive in to a new frame and want the right size. PBH can be measured wrong sometimes, whereas if you have a bike you've been riding a while, it's pretty easy run a tape measure from the center of the bb to the top of the seat and read it from the side. Your PBH being 94cm would suggest a SH of 84cm, which would put you on a 67-69cm AHH if you go by the SH - 15 to 17cm which would give a fistful of seatpost. The 65cm would work too but with more post/stem showing. Again this is assuming an 84cm seat height.
For top-tube length, you can use a shorter stem, which is what I have done on some of my bikes. If the longer TT is still not ideal for your back/shoulders, I would order a custom. I have done this myself and yes it is more expensive, but you will get the Riv fit that is perfect for you. Anyway good luck. Matt -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/-8OSnkg4GUAJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.