Posted this on the main forum. Cross-posting here for more looks.
I have a new PowerTap G3 11spd compatible hub. I have a Shimano Ultegra 6700 drive train and 10 spd 11-28 cassette installed.
When I received the G3 hub/wheel, I used the provided spacer - see picture below. The cassette loaded on no problem and I was able to screw the lock-ring on and tighten without any issues. The ONLY issue I experienced was my shifting was off, way off...by about one cog. Meaning I couldn't get into my 28 at all. Took it to the LBS and in 30 seconds they adjusted my limit screw and dialed in my shifting. Rode 4.5 hours yesterday, no issues.
My question is...have I installed the G3 hub with the 10 spd cassette correctly? The chart here: http://www.slowtwitch.com/...acers_2013_3978.html
says I need both a 1.85 and 1.0 mm spacers installed. Like I said, all I have is the black spacer provided by PowerTap with the G3 hub. Even though it shifts fine, am I really okay long-term to not have the other spacer included?