Not being over 6', I can't answer from experience (sigh).  I was able to take my wife to a Golf Galaxy free session on putting (trying to draw her in...) with the LPGA there.  There was a guy about 6'4" that had been looking on the rack for a putter.  Longest one is the 35".  The LPGA immediately offered he should get fit and probably end up with a 36".  Cameron lists a 36" on the shop site as a customization.  Almost certain Cameron is not the only one offering a 36" on special order.  The 35" should work, but the 36" will be more comfortable.  A new fitting resolving the length may also recommend a different weighting if your swing is getting too much arc and closing too early on the swing.  Did you get your putter off the rack?

She ended up excited about golf and got a RH small mallot 33"  that I'm working with as a possible replacement for my LH 34" full mallot.  I can line the shot up better, but I could get a sore back on 18 holes from crunching down for a putter that is too short.

Yes, I got the putter off the rack. What started all this is I'm trying out new golf balls (NXT Tour S vs. Pro V1x). Both balls perform very very well but I dont really care for the feel of either ball coming off my old putter. That's what got me thinking about how I had just settled for a 35" length and then realizing that my misses are consistently to the left.

Now that you mention it, I can only practice putting for about 10-15 minutes because my back starts getting sore from hunching over. The fitter did adjust the lie of the putter so the blade stays flat to the ground but otherwise, I am fitting myself to the putter.

You can get a shaft extension on the putter.  About almost 2 years ago I bought a 36" White Hot 7H putter used.  I had a fitting done using a Ping fitting putter and ended up with 35" and 2* upright.  The White Hot was a stock 34" putter with a 2" shaft extension. 

Dan,

There's a few things that could be an issue. 35" may be the correct length, maybe 36"...it's best to go get your putter checked out and go through another thorough fitting. I mean, you're lie angle could be a little upright, causing your putts to go left. It really depends on your stroke as well. There are various types of heads/hosels/putters built for a specific stroke type. Hope you get everything figured out.